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Simplify the following and express in the form a + ib. (2i^3)^2

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Simplify the following and express in the form a + ib.

(2i3)2

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Best answer

(2i3)2

= 4i6

= 4(i2)3

= 4(-1)3

= -4 …..[∵ i2 = -1]

= -4 + 0i

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