$\int_0^2\frac{19}{6}x^3e^xdx$

$\int_0^{\frac{1}{2}}\left(sin^4\left(2\pi x\right)\right)dx$

$2^2^2+3^2+1$

$\lim_{x\to infinity}\left(\frac{tan^{-1}x}{\sqrt[5]{x}}\right)$

$\lim_{x\to b}\left(\frac{\left(x+b\right)\left(2x+h\right)}{b+b}\right)$

$\left(5a^{x-2}+8\right)\left(5a^{x-2}-8\right)$

$\frac{x^2+10+16}{x^2-4}$