Thread: Factor and solve for x
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Old May 14th, 2008, 04:39 PM
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\begin{aligned} x^{3}+5x^{2}-x-5&=x^{2}\left( x+5 \right)-(x+5) \\ & =(x+5)\left( x^{2}-1 \right) \\ & =(x+5)(x+1)(x-1).\end{aligned}

(Slight typo at the end Moo.)
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