How do you multiply $(-4i)^3$ ?

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Answer 1 · 2016-10-10T21:55:36

Operate like real numbers, just remember that $i^2 = - 1$

Operate using numbers like real ones:

$(- 4 i)^3 = (- 4)^3 cdot i^3 = - 64 cdot i^2 cdot i = - 64 cdot (-1) cdot i = 64 i$

How do you multiply (-4i)^3(-4i)^3?