(a-2/a+2a-a-1/a+4a+4)/(a-4/a+2),=(6a-3/a+4)/(a-4/a+2)=(6a^2+4a-3)/(a^2+2a-4)=(4a^2+2(a^2+2a-1)-1)/(a^2+2a-1-3)a^2+2a-1=0(a+1)^2=2,a=√2-1,a=-1-√2(4a^2+2(a^2+2a-1)-1)/(a^2+2a-1-3)=(4a^2-1)/(-3)4a^2-1=...