$\lim_{m\to1}\left(\frac{3m^2-3}{m-1}\right)$

$4s\:+\:\frac{1}{6}s\:+\:2\:\frac{3}{5}s$

$6x^2+13x-8$

$\int8tan\left(x\right)sec^3xdx$

$\int_0^{\infty}\left(\frac{kx2\pi a}{a^2+r^2}\right)da$

$\left(\frac{2}{13}ab+\frac{6}{7}cd\right)^3$

$\left(-2\right)\left(0\right)-2$