$5\sqrt{-x^8}\:-2\sqrt{-x^{10}}\:+3\:\sqrt{x^{12}}$
$30k^2+9k-54$
$p=10.0ln\left(h\right)-80$
$4x^2-12x+2$
$\int x^2e^{-5x^3}\:dx$
$\left(t^2+1\right)w'+tw=t$
$\frac{2x^3+7}{x}$
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