$\sec\left(x\right)\csc\left(x\right)=\sin\left(x\right)\sec\left(x\right)+\cot\left(x\right)$

$\int\left(x^2\right)\left(2x^3-7\right)^3dx$

$\lim_{x\to0}\left(\frac{1-\cos\left(x\right)}{x^2}\right)^x$

$-209-373$

$5\left(5x-3\right)^2$

$\frac{x-1}{x+2}<-4$

$\left(\pi x^3+1\right)^4\:3\pi\:x^2$