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27 November, 10:50

The solution to 2x2 - 11 = 87 is

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  1. 27 November, 11:05
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    2x^2 - 11 = 87

    2x^2 = 87 + 11 = 98

    x^2 = 98/2 = 49

    x = sqrt (49) = + or - 7
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