$\int^{12}\left(x\cdot\cos\left(2x^2+3\right)\right)dx$
$\frac{1}{3}\left(x-3\right)-3>0$
$6\:\le\:\:\left(-5x\:+\:\frac{3}{5}\right)$
$cscx\left(tanx-senx\right)=secx-1$
$\lim_{x,y\to2,3}\left(x^2+2xy-5\right)$
$-23xy^2+6xy^2-4xy^2+7xy^2$
$\frac{x}{ax^2}$
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