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18 May, 21:32

Solve 5y 2 = 405 9 ±9 ±81

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  1. 18 May, 22:02
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    5y^2 = 405

    y^2 = 405/5

    y^2 = 81

    y = - 9 and y = 9

    answer

    ±9
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