$\left|-3\right|\cdot\left|8\right|$

$\left(\frac{2}{3}a-\frac{3}{2}a^2\right)^2$

$\lim_{x\to0}\left(12.4x^3+15.6x^2\:h+10.4xh^2+7x+2.6h^3+5h\right)$

$w^2+13w=c$

$-7u^{-2}$

$\lim_{x\to-3}\left(\frac{1-\sqrt{1-x^2}}{x}\right)$

$\frac{2xyz}{\left(x^2+xz+xy+yz\right)\left(y+z\right)}$