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22 November, 21:24

0=x^2-20 can you solve using square root formula? Then by using quadratic formula?

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  1. 22 November, 21:30
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    Sqrt (x^2) = sqrt (20)

    x = + 2sqrt (5)

    x = - 2sqrt (5)

    x1 = ( - 0 + sqrt (0^2 - 4*1 * (-20))) / (2*1)

    X2 = (-0 - sqrt (0^2 - 4*1 * (-20))) / (2*1)
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