$\lim_{x\to2}\left(\frac{\sin\left(x\right)\left(1-\cos\left(x\right)\right)}{2x^3}\right)$

$\int x^{15}dx$

$\frac{x^3+y^3+z^3+3\left(xy+yz+xz\right)-1}{xyz}$

$\lim_{x\to\infty}\left(1+\frac{3}{x}\right)^{5x}$

$\left(4x-9y\right)\left(12x^3y-7x^2y^2+4xy^3\right)$

$\frac{4x^3+8x^2}{x+2}$

$5x;\:x=-3$