0 5 x 10 9 July 8, 2019 16 32 64 128 (- 0 12 x 9 10 )= 6 5 9 x 2 5 x 10 0 0 5 x 10 hoch 9 0 5 x 10 elevado a 9 0 5 × 10 0 5×0 9 0 9 x 5