$\left(x-y\right)\left(x^2+xy+y^2\right)=x^3-y^3$
$121xy-32x^2y^3$
$\frac{\infty1}{12}$
$\csc^2\left(x\right)\cos\left(x\right)=2\csc^2\left(x\right)$
$a\left(x+2\right)+b\left(x+2\right)$
$48\left(-8\right)$
$\frac{dy}{dx}=-2xy+7x$
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