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17 July, 01:41

How do you factor the expression - y^2 9y - 20?

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  1. 17 July, 02:05
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    Undistribute - 1

    (-1) (y^2-9y+20)

    what multiplies to 20 and adds to - 9

    -5 and - 4

    (-1) (x-5) (x-4) or

    (5-x) (x-4) or

    (x-5) (4+x)
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