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SAT I 一日一问:2014年10月23日

2014-10-23 09:30
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Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

If x^negative 2 = 16, what is the value of x^2?

(A) 1 over 16

(B) 1 over 4

(C) 2

(D) 4

(E) 12 

正确答案>>>

The correct answer is A

Explanation

If x^negative 2 = 16, then 1 over x^2 = 16, so x^2 = 1 over 16.

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