$\left(2ax^2+3by\right)^3$

$\int x\left(-12x^{10}+33x^5-10x^2+12\right)dx$

$\frac{3a^{4x}-9b^{2y}}{3b^y+\sqrt{3a^x}}$

$\sqrt{3^6}\cdot3^2$

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

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

$\left(x+y\right)^2\cdot\left(x-y\right)^2=x^4-2x^2y^2+y^4$