Solve x 2 4x 20 0 July 8, 2019 16 32 64 128 Solve $2 x 2 4x 20 0 by completing the square Solve x 3 5x 2 4x 20 0 Solve the equation x 3 5x 2 4x 20 0 Solve 4x = 20 2 x 2 solving
