$3x\:-\:3\:=\:-18$
$x^2-6+36$
$x^2-x-200$
$\frac{1}{2}\left(4x+20\right)=4+4\left(x-3\right)$
$\int\sin^2\left(x\right)+7dx$
$\frac{dy}{dx}+y^2=1$
$9x^4\:-\:6x^2y\:+\:y^2$
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