$9\left(9x^2-4x-3\right)$

$\frac{dy}{dx}=20-2y$

$4xy\left(x+3y\right)$

$\lim_{x\to0}\left(\frac{1-\cos\left(x\right)}{4\sin\left(x\right)}\right)$

$\cos\left(a\right)=\frac{\left(\cos\:\left(3a\right)+\cos\:\left(a\right)\right)}{2\cos\left(2a\right)}$

$512\cdot16\cdot64$

$\int_6^{\infty}\left(\frac{5cos\left(\frac{\pi}{x}\right)}{x^2}\right)dx$