$\int\sin\left(x\right)\left(\cos\left(x\right)+5\right)dx$

$\left(x^4+3x^2+9\right)\left(x^2-1\right)$

$\sqrt{1-x}^2\cdot2\sqrt{x}$

$\lim_{x\to0}\left(\frac{1}{x\sqrt{2+y+x}-\sqrt{2+y}}\right)$

$\frac{dy}{dx}=xcos\left(x\right)+xy^2cos\left(x\right)$

$x^2+2+35$

$2n-2m$