$\left(12.3n^2-5h^2\right)^2$

$\frac{-1}{2}x+3=10$

$\lim_{x\to0}\left(\frac{x-\left|x-1\right|-1}{x}\right)$

$\lim_{x\to0}\left(\frac{x^3+7x^2}{x^2}\right)$

$\left(+35\right)-\left(-32\right)+\left(-16\right)-\left(-24\right)+\left(+28\right)-\left(-36\right)+\left(+17\right)-\left(+16\right)-\left(-20\right)+\left(-8\right)$

$2,50+2,50$

$\lim_{x\to0}\left(\frac{2-\sqrt{x+3}}{x-1}\right)$