$\int\left(\tan\left(4\right)^4\right)\left(\sec\left(x\right)^5\right)dx$

$x^2-5x+10$

$\lim_{x\to1}\left(\frac{x^4+5x^3+6x^2}{\:x^2\left(x+1\right)-4\left(x+1\right)}\right)$

$\left(4a^2-3b\right)\left(2a^3+4b^2\right)$

$\left(\frac{4}{5}m-\frac{2}{3}n\right)^2$

$\frac{d}{dx}5\left(x^2+1\right)^{\sqrt{x}}$

$x^4+0-x^2+0$