$\frac{\left(3y^3\right)\left(2y^2\right)^2}{\left(y^4\right)^3}.\left(y^3\right)^0$

$2x^3-x^2-1$

$\lim_{x\to-2}\left(x^3-2x^2+1\right)$

$\frac{16a^4-b^4}{2a+b}$

$\lim_{x\to\infty}\left(\frac{3}{\left(4^x+5^x\right)^{\left(\frac{1}{x}\right)}}\right)$

$x\sqrt{1+y^2}=\:-y\sqrt{1\:-\:x^2}\frac{dy}{dx}$

$-4+8-3+9-2+7-1$