$\int\frac{\left(x+6\right)}{\left(x+2\right)^2}dx$

$\int_0^4\left(\frac{\left(x-1\right)}{x^2-4x-5}\right)dx$

$\left(11c\:-\:12\right)\left(11c\:+\:12\right)$

$2x^3-8x^2$

$4xy\left(\frac{4^{\frac{8}{4}}x^{\frac{14}{4}}}{4^{\frac{6}{4}}y^{\frac{7}{4}}}\right)$

$35x^2-25x^3+40x^2$

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