$3\left(9+4b\right)-\left(9a^2b+7b+11a\right)+7a^2b=0$

$\frac{dy}{dx}\left(\frac{\left(x+xy\right)}{\left(1+x^2\right)}\right)$

$2m^4+4m^3+2m^2$

$-0.6\cdot9$

$\lim_{x\to-1}\left(\frac{x^3+3x^2+3x+1}{x^2+2x+1}\right)$

$\left(-15x^3+40x^2-4x+1\right)-\left(15x^3+2^2-3x-10\right)$

$\int\left(\frac{1}{\sqrt{28-12x-x^2}}\right)dx$