$\frac{1}{x}-3<-6$
$\frac{z^3}{z-1}$
$2\:5\:ax\:+\:1\:3\:ax\:+\:3\:4\:ax$
$\int\:e^{\sqrt[3]{x+2}}dx$
$-x^2-4x+1$
$1+\cot\tan^2a=\csc^2a$
$\int\left(x^2+2x\right)\left(x+2\right)^{-3}dx$
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