$\int\frac{x^3}{\left(x^2+100\right)}dx$
$9x^2+30x=-21$
$m+1\:\:\:\:\:\:\:m-4$
$x^8-y^4$
$\frac{\sqrt{x^2+4x}}{x^3+1}$
$\left(2x+y\right)^{\left(2\right)}\left(3y-z\right)^{\left(2\right)}$
$\frac{d^2}{dx^2}\left(x^2-y^2=28\right)$
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