$\left(10.r^{10}.y\right).\left(7.r^{10}.y\right)$

$\frac{15}{\left(w^4-2w^2\right)+i\left(5w^3+8w\right)}$

$\int\:\left(\frac{senx}{e^{3ln\left(cosx\right)}}\right)dx$

$\frac{8x^3+18x^2+14x+11}{2x+2}$

$\frac{x}{4}=20$

$\frac{dg}{dy}=3y^2+2y$

$\frac{dy}{dx}=\frac{1}{3}y\left(6-y\right)$