$\frac{d}{dx}\left(x^2-2xy+3y^2=9\right)$

$\frac{8u^4v^2}{5u^3.6u^4v^3}$

$\left(a-3x\right)\left(a-3x\right)$

$\int\frac{2x^2+4x-1}{x^2\left(x+3\right)}dx$

$\frac{700}{2}$

$f'\left(1\right)=-\frac{\sqrt{x^3}}{5}-\frac{\sqrt{x}}{2}$

$\frac{9}{2}=4+cos\left(x+\frac{\pi}{2}\right)$