$\frac{d}{dx}\left(9x\cdot e^{6y}-3y\cdot e^{6y}+5\cdot e^{6y}\right)$

$\left(5m^4-2\right)^3$

$\frac{d}{dx}\cos\left(x+y\right)=\sin\left(x\right)\cdot\sin\left(y\right)$

$\int\frac{2x}{\left(1+x\right)}dx$

$8^3\:.\:8^2\:.\:8^{-7}$

$\frac{9x^4-100}{3x^2-10}$

$a^2-2^a-3\:entre\:a+1$