$\lim_{x\to\pi}\left(\tan\left(x\right)^{\sin\left(x\right)}\right)$

$\frac{z^3}{z^2}$

$\int_{\sqrt[4]{3}}^{e^{2x}}\left(\frac{1}{2\left(1+x\right)\sqrt{x}}\right)dx$

$\int e^3\sqrt{1+2e^{3x}}dx$

$\left(x+2\right)\left(x+3\right)$

$\frac{x^4-2x^3-x^2+x+1}{x^2-2x+1}$

$4\cdot2^2-2^2-7\cdot2-5$