Question

Упростите выражение

Answer 1

Ответ на фото////////////

Answer 2

$frac{y}{by-2b^2}-frac{2}{y^2+y-2by-2b}cdot Big (1+frac{3y+y^2}{3+y}Big )=\\=frac{y}{b(y-2b)}-frac{2}{y(y+1)-2b(y+1)}cdot frac{3+y+3y+y^2}{3+y}=\\=frac{y}{b(y-2b)}-frac{2}{(y+1)(y-2b)}cdot frac{y^2+4y+3}{3+y}=\\=frac{y}{b(y-2b)}-frac{2}{(y+1)(y-2b)}cdot frac{(y+3)(y+1)}{y+3}=frac{y}{b(y-2b)}-frac{2}{y-2b}=\\=frac{y-2b}{b(y-2b)}=frac{1}{b}$