1.

The value of (1 + i)4 + (1 – i)4 is A. 8 B. 4C. -8 D. -4

Answer»

(1 + i)4 + (1 - i)4 = ((1 + i)2)2 + ((1 - i)2)2 

= (2i)2 + (-2i)2 

= -4 + -4 

= -8



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