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15 July, 13:54

Solve the equation 10a^2-10=630 by taking square root

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  1. 15 July, 13:56
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    10a^2-1 0 = 630

    10 (a^2 - 1) = 630

    (a^2 - 1) = 630/10

    a^2 - 1 = 63

    a^2 = 63 + 1

    a^2 = 64

    a = + - 8
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