$\left(y+2\right)\cos\left(\left(y+1\right)x\right)$

$\int\frac{x^2+3x+1}{x^2+4x+5}dx$

$\lim_{x\to0}\left(cos\:x\right)$

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

$\left(+2\right)\:+\:\left(-3\right)\:+\:\left(-4\right)\:-\:\left(-1\right)\:$

$\frac{dy}{dx}ln\left(tan\left(ln\left(\frac{x}{y}\right)\right)\right)$

$\sqrt[4]{m^3}n^2\sqrt[4]{m^5}n^2$