Related Post: 1 2 X 1 )+ 1 0 1 2 1 1 0 (x-1)^2+3(x-1)-1=0 1 2x 1 1 X 0 1 2 X 1 4 0 1 /( X 2 1 0.5 1 2x 2 1 0 1 7x 2 1 2x 2 1 0 K 1 X2 2 K 1 X 1 0 M 1 X2 2 M 1 X 1 0