$in\left(\frac{y^2}{x^3z^2}\right)$
$36nu^2-72n^2+60nu$
$\:xy-2x^2-y=3$
$w^2+10wm^2+25m^4$
$\frac{x^3+3x^2-13x-15}{x^3-9x}$
$\int\frac{4}{t^5}\sin\left(\frac{1}{t^4}-6\right)dt$
$6\sin\left(20x\right)+1=1$
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