$\left(-3xy^2+2x^2y^2\right)^2$
$5xy-7xy+12xy$
$1+\cos+\sin^2x$
$\lim_{x\to0}\left(\frac{x^2-\cos\left(2x\right)}{3x^2}\right)$
$\left|-7\right|-\left|-\:8\right|$
$-3\cdot\left(-5+8-4+1-6\right)$
$\int\frac{\sqrt{x^4+1}}{x}dx$
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