Catalin98id Catalin98id Matematică a fost răspuns d) x2+x=x(x+2)-x e) (x+1)(x-2)-x(x-1)=0 f) (2y-1)(y+1) = 2y (y-1) g) 0,25x2+=(0,5x-1)2 h) yy+2)-y(y-1)=3
