x2 3x 2x 1 x2 4x 3x 2 1, x 2 3 2 4x 2 12, x 3 3x 2-2x 1 0, x 3x-4 x 2 1-x 0, x-x 2-1 2x-3-x 2, x 3 x 2 x-1 x 4, x2-3x+4, x2-4x+3, x 4-3x 2+1, 1-x-2x 2-3x 3, x 2-3x+1, x 2-1 + x 2-4 3, x 3-3x 2-x x 2-3x+1, x 2-3x-1 0, x 2-3x-1/x 2+x+1 3, 3x2-2x-1 0, x 2-3x+4 0, 2x3-x2-1 0, 2x2-3x-1 0, x2-4x+3 0
x2 3x 2x 1 x2 4x 3x 2 1. There are any references about x2 3x 2x 1 x2 4x 3x 2 1 in here. you can look below.