Answer
$-14+2i$
Work Step by Step
Step 1: $(2+4i)(-1+3i)$
Step 2; $2(-1+3i)+4i(-1+3i)$
Step 3: $-2+6i-4i+12i^{2}$
Step 4: $-2+2i+12(-1)$
Step 5: $-2+2i-12$
Step 6: $-14+2i$
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