Answer
$P(-1)=-6$
Work Step by Step
$P(x)=x^3+2x-3$
$x=-1$
$P(x)=x^3+2x-3$
$P(-1)=(-1)^3+2*(-1)-3$
$P(-1)=-1-2-3$
$P(-1)=-1+(-2)+(-3)$
$P(-1)=-6$
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