Solve Triple Nested Exponents: ((y^6)^8)^9 Simplification Challenge

Power Rules with Triple Nested Exponents

((y6)8)9= ((y^6)^8)^9=

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1

Understand the problem

((y6)8)9= ((y^6)^8)^9=

2

Step-by-step solution

We use the power rule of distributing exponents.

(am)n=amn (a^m)^n=a^{m\cdot n} We apply it in the problem:

((y6)8)9=(y68)9=y689=y432 \big((y^6)^8\big)^9=(y^{6\cdot8})^9=y^{6\cdot8\cdot9}=y^{432} When we use the aforementioned rule twice, the first time for the inner parentheses in the first stage and the second time for the remaining parentheses in the second stage, in the last stage we calculate the result of the multiplication in the power exponent.

Therefore, the correct answer is option b.

3

Final Answer

y432 y^{432}

Key Points to Remember

Essential concepts to master this topic
  • Rule: When raising a power to a power, multiply the exponents
  • Technique: Apply (am)n=amn (a^m)^n = a^{m \cdot n} twice: first (y6)8=y48 (y^6)^8 = y^{48} , then (y48)9=y432 (y^{48})^9 = y^{432}
  • Check: Verify by counting total multiplications: 6 × 8 × 9 = 432 ✓

Common Mistakes

Avoid these frequent errors
  • Adding exponents instead of multiplying
    Don't add the exponents like 6 + 8 + 9 = 23! This completely ignores how exponents work and gives y23 y^{23} instead of the correct y432 y^{432} . Always multiply exponents when raising a power to a power.

Practice Quiz

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\( 112^0=\text{?} \)

FAQ

Everything you need to know about this question

Why do I multiply the exponents instead of adding them?

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When you raise a power to a power, you're creating repeated multiplication. For example, (y6)8 (y^6)^8 means y6×y6×y6... y^6 \times y^6 \times y^6... (8 times), so you multiply: 6 × 8 = 48.

How do I handle three layers of parentheses like this problem?

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Work from the inside out! First simplify (y6)8=y48 (y^6)^8 = y^{48} , then raise that result to the 9th power: (y48)9=y432 (y^{48})^9 = y^{432} .

Can I just multiply all three exponents at once?

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Yes! Since you're multiplying exponents at each step, you can multiply all three: 6 × 8 × 9 = 432. This gives the same answer as working step by step.

What if I get confused about which rule to use?

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Remember: same base, add exponents when multiplying (like x2×x3=x5 x^2 \times x^3 = x^5 ), but multiply exponents when raising a power to a power (like (x2)3=x6 (x^2)^3 = x^6 ).

How can I check if 432 is the right answer?

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Think about it logically: you're multiplying the base y by itself 432 times total. You can verify by multiplying the exponents: 6 × 8 × 9 = 432 ✓

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