$3x^2-7x+5-4+3x-x^2$

$\int arc\:\cot\left(g\right)\:x\:dx$

$\frac{2.252^{21}}{2^{17}}$

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

$\frac{dy}{dx}=\frac{\left(2x+y\right)}{\left(x-y\right)}$

$\left(a\:\sin\left(a\right)\right)+\:b\:\cos\left(a\right)^2+\left(a\:\cos\left(a\right)-b\:\sin\left(a\right)\right)^2$

$\int\left(e^x+2x\right)\:dx$