$\lim_{x\to2}\left(\frac{x^3-8}{x^2-6x+8}\right)$

$24a^2-96a+16$

$20\cdot2+19\cdot2+15\cdot2+10\cdot2+5\cdot2+14\cdot2$

$\int\left(x^2\cdot\left(x^2-1\right)^{-\frac{3}{2}}\right)dx$

$\left(4ab^4+6ab^3+5b\right)^2$

$2+\left(5+y\right)$

$\int\:\sqrt{a^2+b^2x^2}\:xdx$