$\tan\left(y\right)-\frac{1}{\cos\left(x\right)}+c=\frac{-2}{1+\tan\left(\frac{x}{2}\right)}+c$

$\int_2^{-4}\left(4+x\right)-\left(2-x\right)dx$

$\left(x\:+\:4\right)\:\left(y\:+\:2\right)\:\left(x\:+\:3\right)$

$\left(r-5\right)\left(r+11\right)$

$\frac{1}{2}\int_0^{\frac{\pi}{4}}\left(\sin\left(x\right)^2\right)dx$

$\int11xtan^2dx$

$5\left(4a+1\right)$