Answer
$-2-2i$
Work Step by Step
Step 1: $(1-i)^{3}$
Step 2: $(1-i)(1-i)(1-i)$
Step 3: $(1-i)(1(1-i)-i(1-i))$
Step 4: $(1-i)(1-i-i+i^{2})$
Step 5: $(1-i)(1-2i+i^{2})$
Step 6: $(1-i)(1-2i-1)$
Step 7: $(1-i)(-2i)$
Step 8: $2i^{2}-2i$
Step 9: $-2-2i$
