$\left(\frac{2m}{3}\right)\left(\frac{3n}{1}\right)$

$\frac{\left(5x^2y^{-3}\right)\left(2x^3y^8\right)}{20x^8y^{-4}}$

$3x^2+x^2+x\:$

$\frac{dy}{dx}-8y=2\cos\left(3x\right)$

$a+2b+a-3c+b-2a+5a-b+3a$

$\lim_{x\to\infty}\left(\frac{8n+1}{8n-1}\right)^n$

$\int\frac{\left(x^2+2\right)}{\left(x+1\right)}dx$