1.

Find the value of following expression: i + i2 + i3 + i4

Answer»

i + i2 + i3 + i4 = i + i2 + i2×i + i4 

= i – 1 + (– 1)×i + 1 

since i4 = 1, i2 = – 1 

= i – 1 – i + 1 = 0



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