$\frac{5}{4}x+6-x$

$\frac{1}{\left(2x\right)^{-\frac{5}{2}}}$

$\sin\left(x\right)\cos^2\left(y\right)-\cos\left(x\right)\sin\left(y\right)\frac{dy}{dx}=0$

$\int x^8\left(x^9+3\right)^7\:dx$

$\int_0^b\left(\frac{cosx}{1-senx}\right)dx$

$25w^2+20w+4$

$\left(5-4^2\right)+8$