Related Post: 3 X 4 2 (- 2x 1 0 3x 4 2x 2 1 0 X^4+2x^3+3x^2+2x+1=0 X 4 2x 3 13x 2 2x 1 0 3 X 2 4 X 1 0 3 X 2 )+ 4 3x 1 )= 0 X 4 4x 3 3x 2 2x 1 0 Solve X 4 2x 3 X 2 2x 1 0 3 2x 2 5.6 X 4 X 1 0 3 X 2 )( 4 X 1 8 2x 1 0