$\frac{dy}{dx}=2x-\left(2^x\right)\left(\ln\left(2\right)\right)$

$\int_2^5\left(x^3+2x\right)e^xdx$

$5a+2b+3b-a$

$\int_{-\infty}^{-9}\left(\frac{48}{x^2-64}\right)dx$

$64\:-\:x^3$

$3x^2y-2xy^2\:10$

$\lim_{x\to0}\left(\frac{cos\left(x^2\right)}{1-sen\left(3x\right)}\right)$