Answer
$x^3-2x^2-5x-2$
Work Step by Step
$(x+1)(x^2-3x-2)=x(x^2-3x-2)+(x^2-3x-2)$
$(x^3-3x^2-2x)+(x^2-3x-2)=x^3-2x^2-5x-2$
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