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If x is real and |x + 3i| = 5, which values can x take?
Ax = ±16
Bx = 2 only
Cx = ±4
Dx = 4 only
Answer & Solution
Correct answer: C. x = ±4
The modulus gives x² + 9 = 25, so x² = 16 and x = ±4.
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