$\lim_{x\to1}\left(\frac{1\sqrt{2x-1}}{x^2-1}\right)$
$\frac{1-2x}{x+2}\le-2$
$2\sin^2z-3\cos z=0$
$\left(4x-7\right)+\left(-9x+1\right)$
$\sqrt[4]{162x^5y^9}$
$14-16+8+12+8+6$
$ln\left(x^3\right).\:\frac{x^4}{4}-\int\:\frac{x^4}{4}.\:\frac{2}{x}dx$
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