$2\cos\left(180\right)+3\sin\left(90\right)-5\cos\left(0\right)-7\sin\left(270\right)$

$\frac{-\ln\left(u-1\right)}{1}+\frac{1}{u-1}$

$\sqrt{\frac{x^8}{x^2}}$

$\int\left(e^x\sqrt{31+e^x}\right)dx$

$\left(8e^{\frac{2}{3}}f^{-\frac{3}{4}}g^{-\frac{6}{7}}k^{\frac{6}{5}}\right)^{-\frac{1}{3}}$

$10-\left[-2+\left(-3-4-1\right)+1-1-\left(-4-2+3-1\right)-4\right]$

$\int\:v\:\tan^2\left(v\right)\:dv$