$12a^2\sqrt{64a^5n^8}$

$\frac{1}{4}r=12$

$2x^2-2\left(x+5\right)-\left(x+3\right)^2+19$

$\sin x\sec x\tan x+\sec x\cos x$

$\frac{dy}{dx}\left(\frac{\sqrt{x^2+3}}{x^7\left(x+8\right)}\right)$

$\left(\frac{6a^{-3}b^4}{11a^4b^{-5}}\right)^0$

$y'=e^{\left(5y+3x\right)}$