$2x+3<3-x$

$\int\frac{x+1}{\sqrt[3]{x^2+2x-100}}dx$

$\left(\frac{x}{x+1}+\frac{x}{x-1}-1\right)\left(x^2-1\right)$

$\lim_{x\to-\infty}\left(\frac{\sqrt{49x^2+x}}{x}\right)$

$169-x^2$

$\frac{1}{sec^2\left(x\right)}-\frac{1}{tan^2\left(x\right)}$

$\int\left(2e^2^x^{+1}\right)dx$