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Updated Mar 18, 2026
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Mocniny a odmocninysú jedným z najdôležitejších nástrojov v matematike,... Show more








Predstav si, že chceš vypočítať plochu štvorca so stranou 5 cm. Namiesto písania 5 × 5 použiješ jednoducho 5². Mocnina je skrátený zápis opakovaného násobenia rovnakého čísla.
Pri mocnine a^n je a základ mocniny (číslo, ktoré násobíme) a n je exponent (hovorí nám, koľkokrát násobíme). Napríklad 3⁴ = 3 × 3 × 3 × 3 = 81.
Odmocniny sú opak mocnín. Druhá odmocnina √a hľadá číslo, ktoré umocnené na druhú dá pôvodné číslo. Tretia odmocnina ∛a hľadá číslo pre tretiu mocninu.
Tip: Zapamätaj si, že zátvorky sú kľúčové! (-3)² = 9, ale -3² = -9.

Kladný exponent znamená klasické násobenie - 3⁴ = 3 × 3 × 3 × 3 = 81. Pozor na záporné základy: ak je exponent párny, výsledok je kladný, ak nepárny, je záporný.
Nulový exponent má jednoduché pravidlo: akékoľvek číslo (okrem nuly) na nulu je 1. Takže 5⁰ = 1, (-100)⁰ = 1.
Záporný exponent znamená, že číslo "preklopíš" a exponent zmenis na kladný. 2⁻³ = 1/2³ = 1/8. Pri zlomkoch sa čitateľ a menovateľ vymenia: (2/3)⁻² = (3/2)² = 9/4.
Pozor: Záporný exponent neznamená záporný výsledok, ale prevrátené číslo!

Tieto vzorce ti ušetria množstvo času pri počítaní. Pri násobení mocnín s rovnakým základom sa exponenty sčítavajú: a^m · a^n = a^. Napríklad 2³ · 2⁵ = 2⁸.
Pri delení sa exponenty odčítavajú: a^m ÷ a^n = a^. Mocnina mocniny funguje tak, že exponenty násobíš: ^n = a^(m·n).
Mocnina súčinu a podielu sa rozkladá na jednotlivé mocniny: (a·b)^n = a^n · b^n a ^n = a^n/b^n. Toto ti pomôže pri zjednodušovaní zložitejších výrazov.
Skúška: Skús si 10³ · 10² = 10⁵ = 100 000. Funguje to!

Druhá odmocnina √a hľadá nezáporné číslo, ktoré umocnené na druhú dá a. Kľúčová podmienka: odmocnenec musí byť nezáporný (a ≥ 0) a výsledok je vždy nezáporný.
Napríklad √25 = 5, pretože 5² = 25. √0 = 0, ale √(-9) nemá riešenie v reálnych číslach.
Pravidlá pre odmocniny: √(a·b) = √a · √b a √ = √a/√b. Toto ti umožní zjednodušovať - √12 = √(4·3) = 2√3.
Častá chyba: √ ≠ √a + √b! Napríklad √(9+16) = √25 = 5, ale √9 + √16 = 3 + 4 = 7.

Tretia odmocnina ∛a môže byť z akéhokoľvek čísla - kladného, záporného aj nuly. ∛8 = 2, ∛(-27) = -3, ∛0 = 0. Pravidlá sú podobné ako pri druhej odmocnine.
Pozrime si praktický príklad: ((2⁻¹)² · 4)⁰ + √144 - ∛(-64). Prvá časť je 1 (čokoľvek na nulu), √144 = 12, ∛(-64) = -4. Výsledok: 1 + 12 - (-4) = 17.
Pri zjednodušovaní ako √18 + √50 rozlož čísla: √18 = √(9·2) = 3√2, √50 = √(25·2) = 5√2. Potom sčítaj: 3√2 + 5√2 = 8√2.
Tip: Vždy sa snaž vytýkať úplné mocniny pre jednoduchší výsledok!

Kľúčové vzorce na zapamätanie: a^m · a^n = a^, a^m ÷ a^n = a^, ^n = a^(m·n), a⁰ = 1, a⁻n = 1/a^n. Pre odmocniny: √(a·b) = √a · √b.
Dôležité rozdiely: Druhá odmocnina len z nezáporných čísel s nezáporným výsledkom. Tretia odmocnina z akýchkoľvek čísel. Pozor na znamienka pri záporných základoch!
Častý omyl: Záporný exponent neznamená záporný výsledok, ale prevrátenie čísla. Tiež si dávaj pozor na poradie operácií - najprv zátvorky, potom mocniny a odmocniny.
Pre skúšku: Precvič si hlavne pravidlá pre mocniny a zjednodušovanie odmocnín!

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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Mocniny a odmocniny sú jedným z najdôležitejších nástrojov v matematike, ktoré ti pomôžu pri riešení úloh z geometrie, fyziky a ďalších predmetov. Namiesto písania dlhých násobení dokážeš používať skrátené zápisy a efektívne počítať.

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Predstav si, že chceš vypočítať plochu štvorca so stranou 5 cm. Namiesto písania 5 × 5 použiješ jednoducho 5². Mocnina je skrátený zápis opakovaného násobenia rovnakého čísla.
Pri mocnine a^n je a základ mocniny (číslo, ktoré násobíme) a n je exponent (hovorí nám, koľkokrát násobíme). Napríklad 3⁴ = 3 × 3 × 3 × 3 = 81.
Odmocniny sú opak mocnín. Druhá odmocnina √a hľadá číslo, ktoré umocnené na druhú dá pôvodné číslo. Tretia odmocnina ∛a hľadá číslo pre tretiu mocninu.
Tip: Zapamätaj si, že zátvorky sú kľúčové! (-3)² = 9, ale -3² = -9.

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Kladný exponent znamená klasické násobenie - 3⁴ = 3 × 3 × 3 × 3 = 81. Pozor na záporné základy: ak je exponent párny, výsledok je kladný, ak nepárny, je záporný.
Nulový exponent má jednoduché pravidlo: akékoľvek číslo (okrem nuly) na nulu je 1. Takže 5⁰ = 1, (-100)⁰ = 1.
Záporný exponent znamená, že číslo "preklopíš" a exponent zmenis na kladný. 2⁻³ = 1/2³ = 1/8. Pri zlomkoch sa čitateľ a menovateľ vymenia: (2/3)⁻² = (3/2)² = 9/4.
Pozor: Záporný exponent neznamená záporný výsledok, ale prevrátené číslo!

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Tieto vzorce ti ušetria množstvo času pri počítaní. Pri násobení mocnín s rovnakým základom sa exponenty sčítavajú: a^m · a^n = a^. Napríklad 2³ · 2⁵ = 2⁸.
Pri delení sa exponenty odčítavajú: a^m ÷ a^n = a^. Mocnina mocniny funguje tak, že exponenty násobíš: ^n = a^(m·n).
Mocnina súčinu a podielu sa rozkladá na jednotlivé mocniny: (a·b)^n = a^n · b^n a ^n = a^n/b^n. Toto ti pomôže pri zjednodušovaní zložitejších výrazov.
Skúška: Skús si 10³ · 10² = 10⁵ = 100 000. Funguje to!

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Druhá odmocnina √a hľadá nezáporné číslo, ktoré umocnené na druhú dá a. Kľúčová podmienka: odmocnenec musí byť nezáporný (a ≥ 0) a výsledok je vždy nezáporný.
Napríklad √25 = 5, pretože 5² = 25. √0 = 0, ale √(-9) nemá riešenie v reálnych číslach.
Pravidlá pre odmocniny: √(a·b) = √a · √b a √ = √a/√b. Toto ti umožní zjednodušovať - √12 = √(4·3) = 2√3.
Častá chyba: √ ≠ √a + √b! Napríklad √(9+16) = √25 = 5, ale √9 + √16 = 3 + 4 = 7.

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Tretia odmocnina ∛a môže byť z akéhokoľvek čísla - kladného, záporného aj nuly. ∛8 = 2, ∛(-27) = -3, ∛0 = 0. Pravidlá sú podobné ako pri druhej odmocnine.
Pozrime si praktický príklad: ((2⁻¹)² · 4)⁰ + √144 - ∛(-64). Prvá časť je 1 (čokoľvek na nulu), √144 = 12, ∛(-64) = -4. Výsledok: 1 + 12 - (-4) = 17.
Pri zjednodušovaní ako √18 + √50 rozlož čísla: √18 = √(9·2) = 3√2, √50 = √(25·2) = 5√2. Potom sčítaj: 3√2 + 5√2 = 8√2.
Tip: Vždy sa snaž vytýkať úplné mocniny pre jednoduchší výsledok!

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Kľúčové vzorce na zapamätanie: a^m · a^n = a^, a^m ÷ a^n = a^, ^n = a^(m·n), a⁰ = 1, a⁻n = 1/a^n. Pre odmocniny: √(a·b) = √a · √b.
Dôležité rozdiely: Druhá odmocnina len z nezáporných čísel s nezáporným výsledkom. Tretia odmocnina z akýchkoľvek čísel. Pozor na znamienka pri záporných základoch!
Častý omyl: Záporný exponent neznamená záporný výsledok, ale prevrátenie čísla. Tiež si dávaj pozor na poradie operácií - najprv zátvorky, potom mocniny a odmocniny.
Pre skúšku: Precvič si hlavne pravidlá pre mocniny a zjednodušovanie odmocnín!

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Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user