$\int\frac{2\left(x+20\right)}{x^2-25}dx$

$y'\:=\:6x\:-\:xy\:-\:y\:+\:6$

$\frac{\left(9+8cos\left(x\right)\right)}{6+9sec\left(x\right)}$

$4n^2\cdot6n^3$

$\int\frac{1}{7-4t}dt$

$\int_2^1\left(2x+5\right)dx$

$\int\sqrt{\frac{4\sqrt{\left(2e^x\right)^{-4}+1}}{\sqrt{\left(2e^x\right)^{-4}}}}dx$