1.

Solve the following equation for the two roots of x:   x2 — 16 = 0

A. x = 2i,   –2i
B. x = 4i,   –4i
C. x = 4,   –4
D. x = 2,   –2
Answer» D. x = 2,¬†¬†¬†‚Äì2


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