$\sqrt[3]{a^{15}}b^{27}$

$\lim_{x\to3}\left(\frac{x}{3-x}\right)$

$\lim_{x\to0}\left(\frac{3^x-2^x}{2x}\right)$

$51\:-\:\left(-12\right)$

$\int\left(\frac{\sin^2\left(x\right)}{\sin^2\left(x\right)\cos2\left(x\right)}\right)dx$

$\frac{dy}{dx}=\left(1+y\cdot x^{-1}\right)$

$9x-4y-3z=12$