alleryIf x² = 36, what can we conclude about x?
Ax = 6
Bx = 6 or x = -6
Cx = 18 or x = 2
Dx ≥ 0 always
Answer & Solution
Correct answer: B. x = 6 or x = -6
x² = 36 implies x = ±6. The classic GMAT DS trap: 'x² = some value' leaves the SIGN ambiguous.
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