$-7g\:+\:17\left(\:-4\:+\:9g\right)$

$144w^6x^4-169z^2$

$y\cos\left(x\right)-\cos\left(x\right)+\frac{dy}{dx}=0$

$f\left(x\right)=3x^4-\frac{1}{5}x^2+7x-2$

$\lim_{x\to\infty}\:\frac{\left(x^2+x\right)}{5x}$

$\frac{5x^3-8x^2+7x}{x-5}$

$\left(a+\left(b+2\right)\right)\left(a-\left(b+2\right)\right)$