Related Post: X 5x 1 2 4 0 X 3 5 1 2 0 4 X 1 2 5x 1 4 6 0 X 4 5x 3 8x 2 5x 1 0 5 X 2 1 4 X 0 2 X 5 0 5x 1 2x 4 0 25 2x 4 )( 1 5x 3 )( X 2 4 )= 0 X 4 X 1 5x 2 6x 6 0 X^4-5x^2+4 Factor