$4ax^2+2a^2x-6xa$

$2\cdot\left(-2\right)^2\ge3\cdot\left(-2\right)+5$

$\lim_{x\to1}\left(\frac{\left(x-1\right)^2}{x-e^{x-1}}\right)$

$\frac{d^2}{dx^2}\left(\:2x^4\:+\:3x^2\:+4x\:+\:9\right)$

$20.1-5.7$

$\left(7z\right)^{-3}\cdot\left(7z\right)^5$

$\int\left(\frac{1}{\left(10x-3\right)^2}\right)dx$