$\left(2^2\cdot2\right)\left(2^3\cdot2^2\right)^3$

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

$f\left(-2\right)=2x^3-6x^2\:$

$\int x^8\left(x^9+3\right)^7\:dx$

$\lim_{x\to\infty}\left(\frac{2x^2+5x}{9x^3+x+5}\right)$

$\int_0^x\left(\frac{1-e^{-t^2}}{t^2}\right)dx$

$3x^2-6x+4=0$