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24 May, 00:43

Simplify this imaginary number; sqr - 8?

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  1. 24 May, 02:57
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    Remember

    i=√-1

    i²=-1

    √ (ab) = (√a) (√8)

    so

    √-8 = (√-1) (√8) = (i) (√2*2*2) = i (2√2) = 2i√2
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