$\left(-1\right)\:x\:\left(2\right)\:x\:\left(-1\right)\:x\:\left(-2\right)\:x\:\left(-1\right)\:$

$\int\left(2x^2\sqrt[4]{5+2x^3}\right)dx$

$\int\frac{14x+49}{\sqrt{x^2+7x-1}}dx$

$\left(8-.5\right)$

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

$\arctan\left(x\right)+\arctan\left(y\right)=c$

$\log_{13}\left(2x^2\right)$