Réponse :
bonjour
A = 2 ⁷ = 2 * 2 * 2 * 2 * 2 * 2 * 2 = 128
B = ( - 3 ) ⁴ = ( - 3 ) * ( - 3 ) * ( - 3 ) * ( - 3 ) = 81
C = - 4 ⁻⁴ = - 1/4⁴ = - 1 /256
D = ( 1/2 ) ⁵ = 1 /32
2. E = 18 x 35 x 10 ⁷ x 10 ⁵ : 63 x 2 x 10 ⁹
E = 630 x 10 ⁷⁺⁵ : 126 x 10 ⁹
E = 630 x 10 ¹² : 126 x 10 ⁹
E = 5 x 10 ¹²⁻⁹ = 5 x 10 ³
F = 768 x 10 ⁷ : 384 x 10 ⁻⁵
F = 2 x 10 ¹²
150 000 = 1.5 x 10 ⁵
- 0. 000 000 67 = - 6.7 x10 ⁻⁷
704 000 000 = 7.04 x 10 ⁸
0.000 127 8 = 1.278 x 10 ⁻⁴
645.3 x 10 ⁶ = 6.453 x 10² x 10 ⁶ = 6.453 x 10 ⁸
0.056 x 10 ¹⁵ = 5.6 x 10 ⁻² x 10 ¹⁵ = 5.6 x 10 ¹³
- 13.7 x 10 ⁻⁹ = - 1.37 x 10 x 10 ⁻⁹ = - 1.37 x 10 ⁻⁸
- 542 x 10 ⁷ = - 5.42 x 10² x 10 ⁷ = - 5.42 x 10 ⁹
8.3 x 10 ⁵ = 8 30000
- 6.91 x 10 ⁻³ = - 0.006 91
5 .9451 x 10 ¹ = 59. 451
- .9 9 x 10 ⁻⁷ = - 0.000 000 99
Explications étape par étape :
