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10 May, 05:19

What is the value of i20+-?

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  1. 10 May, 06:51
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    i^20+1

    i = / 2

    i^2 = - 1

    i^3 = - i

    i^4 = 1

    for every four it repeat itself.

    4, 8, 12, 16, 20.

    therefore i^20=1

    1+1=2
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