$\frac{d^2}{dx^2}\left(fg\right)$

$\left(-256\right)+\left(-149\right)+\left(-318\right)$

$2x-3\ge9$

$\left(3xyz^2\right)\left(5x^2y-7y^2z^3+xz\right)$

$\frac{15x^4+0x^3-6x^2+0x+1}{5x^2+0x-1}$

$\lim_{x\to1}\left(x^{\frac{2}{\left(1-x\right)}}\right)$

$\frac{dy}{dx}=2-y,y\left(0\right)=0$