$\left(3y^2-4y+4\right)-\left(y^2-2y-4\right)$

$-9x^2y\left(-7x^3y^4-8x^{-2}y^2\right)$

$\frac{3x}{x+2}\ge3$

$\left(\frac{3}{5}x-9y\right)^2$

$36^2+36x+9$

$\frac{dy}{dx}\left(\frac{x^3cos^3\left(x\right)}{\left(x+1\right)^{\frac{3}{2}}}\right)$

$\frac{x^6-2x^4+x^2-12}{x-2}$