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22 January, 04:28

R^2+7r+10/3 / 3-30/r2-5r-50

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  1. 22 January, 04:41
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    Multiply r^2+7r+10/3 by 3r-30/r^2-5r-50

    = (r^2+7r+10) / 3 (3r-30) / (r^2-5r-50)

    = (r+2) (r+5) / 3 3 (r+10) / (r-10) (r+5)

    =3 (r+2) (r+5) (r+10) / 3 (r-10) (r+5)

    = (r+2) (r+10) / (r-10)
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