$(1-i)^3 = -2-2i$
Work Step by Step
$(1-i)^3 = (1-i)^2~(1-i)$ $(1-i)^3 = (1-2i-1)~(1-i)$ $(1-i)^3 = (-2i)~(1-i)$ $(1-i)^3 = -2-2i$
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