SAT Math Multiple Choice Practice Question 374: Answer and Explanation

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Question: 374

22. If , then x could be

A. -6
B. -2
C. 0
D. 4
E. 6

Correct Answer: B


B The equation states that some number, when squared, equals 36. That number can be either 6 or –6. Taking the square root of both sides of the equation gives:

Therefore, the answer is (B)–2.

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