$\frac{0.9}{0.1}$

$0.035\left(2\right)^2-0.266\left(2\right)^2+1.005\left(2\right)^2+0.509\left(2\right)+2.986$

$-8-15-19,4-29,100-1$

$\lim_{x\to0}\left(\frac{\sin\left(x-1\right)}{2\ln\left(x\right)}\right)$

$5x\left(x+6y\right)\left(\frac{dy}{dx}\right)=5y\left(x-6y\right)$

$\sqrt{8.32\cdot10^{-7}}$

$\left(2x+y-1\right)^2$