1990 AHSME Problems/Problem 22

Problem

If the six solutions of $x^6=-64$ are written in the form $a+bi$ , where $a$ and $b$ are real, then the product of those solutions with $a>0$ is

$\text{(A) } -2\quad \text{(B) } 0\quad \text{(C) } 2i\quad \text{(D) } 4\quad \text{(E) } 16$

$\fbox{D}$

1990 AHSME (Problems • Answer Key • Resources)
Preceded by Problem 21	Followed by Problem 23
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