Related Post: 5x 4 - X 2 = 0 X 0 5x 4x 2 3 0 5 4x 2 5x 4y 4 0 X 20 12y By Substitution Method 5x 4y 4 0 X 20 12y 4 X 2 5x 6 0 Y 0 5x 2 X 4 X 2 5x 4 0 Quadratic Formula X 2 5x 4 0 Solve By Factoring X 2 5x 4 0 Completing The Square