$\int x\left(\sqrt{2x-3}\right)dx$

$\int\frac{7}{\left(x+1\right)^2}dx$

$\left(\frac{sin\left(x^2\right)}{1-\cos\left(2x\right)}\right)$

$\int_{\tan\left(x\right)}^{\sec\left(x\right)}\left(2x\cos\left(y\right)\right)dx$

$-\:2hx\:-\:2hx\:-\:2hx$

$\left(a-2b^3\right)\left(a+2b^4\right)$