Question 58 Answer and Explanation _ACT June 2017 Form 74C Math Section

Question 58 Answer and Explanation _ACT June 2017 Form 74C Math Section

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58. For all real numbers x and the imaginary number $i$ , which of the following expressions is equivalent to ${(x-3i)}^{3}$ ？

F. ${x}^{3}-{9x}^{2}i-27x+27i$

G. ${x}^{3}+{9x}^{2}i-27x+27i$

H. ${x}^{3}+{3x}^{2}i-9x-27i$

J. ${x}^{3}-3{x}^{2}i-9x+27i$

K.

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

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