re-bonjour,
A = 45 × 10¹² × 4 × 10⁻²⁶
= (45 × 4) × (10¹² × 10⁻²⁶)
= 180 × 10¹²⁺⁽⁻²⁶⁾
= 180 × 10⁻¹⁴
= 1,8 × 10² × 10⁻¹⁴
= 1,8 × 10²⁺⁽⁻¹⁴⁾
= 1,8 × 10⁻¹²
B = (36 × 10¹⁵) / (3 × 10⁻¹⁷)
= (36/3) × (10¹⁵/10⁻¹⁷)
= 12 × 10¹⁵⁻⁽⁻¹⁷⁾
= 12 × 10³²
= 1,2 × 10¹ × 10³²
= 1,2 × 10¹⁺³²
= 1,2 × 10³³
C = (-48,8 × 10²³) / (-4 × 10¹⁵)
= (-48,8/(-4)) × (10²³/10¹⁵)
= 12,2 × 10²³⁻¹⁵
= 12,2 × 10⁸
= 1,22 × 10¹ × 10⁸
= 1,22 × 10¹⁺⁸
= 1,22 × 10⁹
