$\left(x+2\right)-\left(x-2\right)^2$

$\frac{d}{dx}\left(x^4y^4\right)$

$-5w-2\left(-2x+w\right)+6x$

$\left(x+2\right)\left(3x+2\right)$

$\left(2h+3\right)^2$

$\sqrt{\frac{72x^2\cdot y^5}{8x^2\cdot y^7}}$

$\cos\left(x\right)\left(\frac{1}{\cos\left(x\right)\sin\left(x\right)}\right)$