Calculate (2³)⁶: Solving Nested Power Expressions

Power Rules with Nested Exponents

(23)6= (2^3)^6 =

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1

Understand the problem

(23)6= (2^3)^6 =

2

Step-by-step solution

To solve the given expression (23)6 (2^3)^6 , we apply the power of a power rule (am)n=amn (a^m)^n = a^{m \cdot n} . Here, a=2 a = 2 , m=3 m = 3 , and n=6 n = 6 .

Thus, we calculate the exponent:

36=18 3 \cdot 6 = 18

So, (23)6=218 (2^3)^6 = 2^{18} .

3

Final Answer

218 2^{18}

Key Points to Remember

Essential concepts to master this topic
  • Power Rule: For (am)n (a^m)^n , multiply exponents: amn a^{m \cdot n}
  • Technique: Multiply inner and outer exponents: 3×6=18 3 \times 6 = 18
  • Check: Calculate 23=8 2^3 = 8 , then 86=218 8^6 = 2^{18}

Common Mistakes

Avoid these frequent errors
  • Adding exponents instead of multiplying
    Don't add the exponents 3 + 6 = 9 to get 29 2^9 ! Addition only applies when multiplying powers with the same base, not for power of a power. Always multiply exponents for nested powers: (am)n=amn (a^m)^n = a^{m \cdot n} .

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FAQ

Everything you need to know about this question

Why do I multiply the exponents instead of adding them?

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The power of a power rule says (am)n=amn (a^m)^n = a^{m \cdot n} . Think of it this way: (23)6 (2^3)^6 means multiply 23 2^3 by itself 6 times, creating 18 total factors of 2.

What's the difference between 2326 2^3 \cdot 2^6 and (23)6 (2^3)^6 ?

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For 2326 2^3 \cdot 2^6 , you add exponents: 23+6=29 2^{3+6} = 2^9 . For (23)6 (2^3)^6 , you multiply exponents: 23×6=218 2^{3 \times 6} = 2^{18} . The parentheses make all the difference!

Can I solve this by calculating 23 2^3 first?

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Yes! You can calculate 23=8 2^3 = 8 , then find 86 8^6 . But using the power rule (23)6=218 (2^3)^6 = 2^{18} is much faster and helps you recognize the pattern.

How do I remember when to add vs multiply exponents?

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Multiplication of powers: aman=am+n a^m \cdot a^n = a^{m+n} (add exponents)

Power of a power: (am)n=amn (a^m)^n = a^{m \cdot n} (multiply exponents)

Look for parentheses - they tell you it's power of a power!

What if the numbers get too big to calculate?

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That's the beauty of exponent rules! You don't need to calculate 218 2^{18} (which is 262,144). Just leave your answer as 218 2^{18} - it's the simplest form.

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