$x\left(\tan\left(47\right)-\tan\left(17\right)\right)=389\:\tan\left(17\right)$

$\left(a^{x}+b^{n}\right)\left(a^{x}-b^{n}\right)$

$\lim_{x\to\infty}\left(\frac{5x-9x^2+9}{2x^3+8x^2-8}\right)^{-3x-3}$

$\frac{dy}{dx}=\frac{\cos\left(x-y\right)}{2}$

$8.66+4.33+4.33+18.11$

$14b^4c-49b^3c^2+21b^2c^3$

$\int\left(x+2\right)\sqrt{1+3x}dx$