$\frac{1}{\left(x+3\right)\left(x+2\right)}$

$\int\frac{x^2}{\sqrt{10+x^2}}dx$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{\cot\left(x\right)}{x-\frac{\pi}{2}}\right)$

$\left(a-b\right)^9-125\left(c-d\right)^6$

$15x\:si\:x=2$

$\left(\frac{2}{5}-\frac{3}{2}i\right)^2$

$\frac{\tan\left(x\right)}{\sec x-1}$