12 5 x 0 2 July 8, 2019 16 32 64 128 12 5 x 0 25 12 5 x 0 5 x 2 x 4 2x 12 0 x 5 2 9 2x 12 5 x 6 0 5 2x 5 x 12 0 16x 5 x 2 12 0 12 5 × 0 5 12 5 x 0 1 12 5 x 0 5 12×0 5 12 5-5x=0