Asked by Gash

Find the real number x if (x-2i)(1+i)is purely imaginary.

6 years ago

Answered by oobleck

(x-2i)(1+i) = x+2 + some i stuff
If it's purely imaginary, the real part, x+2 = 0

6 years ago

Answered by Gash

M nt understanding whether it's purely imaginary or no

6 years ago

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