Given the complex number Z = 2 − 2i1 + I, then the conjugate complex number of Z is equal to () A. 2iB. -2iC. iD. -i

∵ complex z = 2 − 2i1 + I = (2 − 2I) (1 − I) (1 + I) (1 − I) = − 4i2 = - 2I, ∵ the conjugate complex of complex Z is equal to 2I, so a is selected

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