$\left(2x^2\right)\left(2y^3\right)$

$\frac{d}{dx},\:xy^2+e^{xy}=x^3+y$

$\int\frac{9t^{2}}{\sqrt{49-t^{2}}}dt$

$\lim_{x\to\infty}\left(\frac{3x+1}{2}\right)$

$-20:1+2$

$\left(4a-2\right)\left(4a+2\right)$

$\lim_{x\to0}\left(7sin\left(12t\right)ln\left(12t\right)\right)$