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9 July, 10:30

X2-3x-4/x+1 simplify rational expression

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  1. 9 July, 10:42
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    x² - 3x - 4 = x² - 4x + x - 4 = (x + 1) (x - 4) = x - 4

    x + 1 x + 1 x + 1
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