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=x3+−x2+−x2+2x+−3=(x3)+(−x2+−x2)+(2x)+(−3)=x3+−2x2+2x+−3
=x3−2x2+2x−3
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x^2+2x-3
x^2(x-1)
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(x+3)(x-1)
x^2/(x+3)