Related Post: X 2 5x 19 0 X 2 5x 19 X 2 5x 19 0 Complete The Square X 2 6x 19 5x 9 2 X 4 )= 5x 19 X 2 2x 1 5x 19 2 X 11 )= 5x 19 3 5 X 2 19 5x 4 X+19/-2=5