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1 November, 21:40

3d squared - 1 for d = - 5

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  1. 1 November, 23:56
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    3d^2 - 1

    d = - 5 (given)

    By Substituting,

    3 (-5) ^2 - 1

    = 3 * 25 - 1

    = 75 - 1

    = 74
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