$\int_{9\:}^{\infty\:}\left(\frac{1}{\sqrt{x}}\right)dx$
$\cos2x-2\sin^2x+3=2$
$\frac{m^4}{m^1}$
$r^2-1$
$\left(5x-2\right)\left(-x-5\right)\left(5x+5\right)$
$-2x^3+7x^2-3x-12$
$\left(x^2+1\right)\cos\left(x\right)$
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