$4\left(x\:+\:3\right)\:-\:10y$

$\int\frac{5}{4}x^4e^{2x}\:dx$

$\lim_{x\to\infty}\left(\frac{3x^2-5}{3x^2+2x}\right)^{\left(\frac{3}{5}\right)^2}$

$\frac{b^3+27}{b+3}$

$\left(a\:x\:+\:x\:y\right)\left(a\:x\:-\:x\:y\right)$

$\frac{d}{dx}ln\:4x$

$-\left(3+5\right)+\left(+8-2\right)$