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7 August, 14:01

Solve each equation for x. a) x-1=0b) x+1=0 c) x²-1=0 d) x²+1=0

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  1. 7 August, 16:35
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    Answer

    given,

    a) x-1=0

    adding both side with 1

    x = 1

    b) x + 1 = 0

    subtracting both side by 1

    x = - 1

    c) x² - 1 = 0

    x² = 1

    taking square root

    x = √1

    x = 1

    d) x² + 1 = 0

    x² = - 1

    taking square root

    x = √-1

    x = i (iota)
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