$\int tan^6\:2x\:dx$
$\int\left(\frac{9}{8+9x}\right)dx$
$\lim_{x\to-2}\left(x^3-2x^2+18\right)$
$2x+1<-4$
$\frac{5x^4-3x^2+x+1}{x^2+2}$
$\left(x+3\right)^2+2\left(2x-1\right)\le2\left(x+1\right)-2$
$-4x\le10$
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