5x 2 8x 5 0 July 8, 2019 16 32 64 128 2 5x 1 4 5 8x 0 25 x 9x 5x 1 2 8x 7x 5 9x 0 9x 5x 1 2 8x 7x 5 9x 0 comprobacion 5x2 - 8x = 0