Réponses

2014-05-01T15:30:19+02:00
280x10∧17x5x10∧18 = 280x5x10∧17+18 = 1400x10∧35 = 1,4x10∧3x10∧35 = 1,4x10∧38
2014-05-01T15:32:07+02:00
280 x 10^17 x 5 x10^18
=280 x 10^17 x 5x10 x 10^17
=280x5x10 x 10^34
=280x50 x 10^34
=14000 x 10^34
=1.4 x 10^4 x 10^34
=1.4 x 10^38