$\left(xm+xn\right)^2$

$\frac{\left(\infty\:+1\right)}{\infty\left(\infty+2\right)\left(\infty^2-2\infty+5\right)}$

$9a\left(4ab\right)$

$\int-4\sin\left(x^2\right)dx$

$\left(\frac{\left(2x+7\right)}{\left(x-1\right)}=5\right)$

$\int\left(\frac{5x-3}{\left(x+2\right)\left(x-5\right)}\right)dx$

$cot^2y\left(sec^2y-1\right)$