$\tan\left(x\right)\left(1+\cos\left(x\right)\right)$

$\left(7\right)^2-\left(-4\right)^3$

$4\sqrt{12x^4y\:}-\:5\sqrt{3x^2y}\:+\:\sqrt{75x^6y^3}$

$\int15x^2e^{-8x^3+39}dx$

$12x^2+23x+5$

$\lim_{x\to\infty}\left(\frac{x}{ln\left(x^{16}\right)}\right)$

$\int\left(4-x^2\right)^{-\frac{1}{2}}dx$