$\int\left(\frac{4}{x^3}\right)dx$

$\int\left(\frac{3.2^x.3^x.2}{2^x}\right)dx$

$\frac{dy}{dx}=\frac{2x+7}{6cos\left(3y\right)}$

$2x^2+2x-12$

$\left(5x-10^2\right)$

$5\left(-3\right)^2+2\left(2\right)\left(-1\right)+3\left(-4\right)$

$\lim_{x\to0}\frac{\sin\left(0\right)}{0}$