$3a\left(b\right)^2-3ab+4\left(a\right)^2b+3ab-6\left(a\right)^2\left(b\right)^2$

$\lim_{x\to10}\left(\left(x-10\right)^2\cdot\frac{e^{-x}}{x^3-14x^2+44x-40}\right)$

$\left(4x\right)\left(6x\right)-3x\cdot9x$

$-2x-2>-x^{\left(2\right)}+6x+7$

$4ax^2+8a^2x+2a$

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

$212.5-245.25\cdot\cos\left(x\right)=0$