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If x² = 49 and x < 0, x =
A
7
B
−7
C
−49
D
0
Answer & Solution
Correct answer: B. −7
1. x² = 49 → x = ±7. 2. x < 0 → x = −7. _Source: 501-GMAT-Questions Section 4 / Manhattan Quant Bank_
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