$\left(x+5\right)x\left(x-5\right)$

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

$5x-4\le-10x+26$

$\int_0^{-0.2}\left(\frac{e^x}{\sqrt{1-e^{2x}}}\right)dx$

$\frac{tan\left(x\right)\:cot\:\left(x\right)}{sec^2\left(x\right)}=cos^2\:x$

$3x+2x-x+2x^2$

$\lim_{x\to1}\left(x^{11}-1\right)$