$\left(m^2+8\right)\left(m^2-3\right)$
$x+y-z=2$
$216y^4+y$
$\int e^{-x}\left(1+e^{-x}\right)^2dx$
$7-2x>-3$
$x^4+4x^2-77$
$f\left(x\right)=\sqrt{\frac{1}{x^2-2}}$
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