$\frac{4x^2+19x+23}{x+3}$

$\left(w-10\right)\left(w+13\right)$

$\lim_{x\to0}\left(\frac{1}{x^n}\right)$

$\sin\left(x\right)^2\cos\left(x\right)^2+\cos\left(x\right)^4=\cos\left(x\right)^2$

$w^3+2w^2-w-2$

$\frac{dy}{dx}\left(1+x\right)\left(1+y\right)$

$\frac{1}{b-1}=\frac{2}{b-2}$