$\left(5\cdot8\right)\left(2\cdot10\right)\left(18\cdot18\right)$

$2\:x+2-12$

$\sqrt{10^2-2^2}$

$\int\frac{2x-3}{\left(x+5\right)\left(x+1\right)}dx$

$\frac{1}{2-\sqrt{x}}\cdot\frac{2+\sqrt{x}}{2+\sqrt{x}}$

$cosxsin\left(\frac{3x}{2}\right)+cosxsin\left(\frac{3x}{2}\right)+\frac{3}{2}cos\left(\frac{3x}{2}\right)sin\left(\frac{x}{2}\right)$

$\left(\frac{-7x}{4}y^2-\frac{6x^3}{5}y^4\right)\left(\frac{7x}{4}y^2-\frac{6x^3}{5}y^4\right)$