Answer
$-7-24i$
Work Step by Step
FOIL the terms in the parentheses. Then combine like terms and make sure to convert $i^{2}$ into $-1$.
$(3-4i)^{2}$
$(3-4i)(3-4i)$
$9-12i-12i+16i^{2}$
$9-24i-16$
$-7-24i$
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