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4 June, 21:15

R^2+6r-40 factor each expression

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  1. 4 June, 21:30
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    (r + 10) (r - 4)

    To double check:

    r * r is r^2

    10 * r = 10r; - 4 * r = - 4r

    Combine to get 6r.

    -4 * 10 = - 40
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