Question 9 Answer and Explanation _ACT April 2018 Form A09 Math Section

Question 9 Answer and Explanation _ACT April 2018 Form A09 Math Section

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9. Which of the following is equivalent to ${({a}^{3})}^{21}$ ？

A. 63a

B. 24a

C. $3{a}^{21}$

D. ${a}^{24}$

E. ${a}^{63}$

Answer and Explanation

Your Answer is

Correct Answer is E

Explanation

(aⁿ)^m=a^nm=(a³)²¹ sup>=a ⁶³