Réponse :
A = √(3⁴ x 5²) = 3² x 5 = 45
B = √(9 x 10⁶) = √(3² x (10³)² = 3 x 10³
C = √(16 x 10⁻⁸) = √(4² x (10⁻⁴)²) = 4 x 10⁻⁴
D = √(8.1 x 10⁹) = √(81 x 10⁻¹ x 10⁹) = √(81 x 10⁸) = √(81 x (10⁴)²) = 9 x 10⁴
Explications étape par étape :
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Réponse :
A = √(3⁴ x 5²) = 3² x 5 = 45
B = √(9 x 10⁶) = √(3² x (10³)² = 3 x 10³
C = √(16 x 10⁻⁸) = √(4² x (10⁻⁴)²) = 4 x 10⁻⁴
D = √(8.1 x 10⁹) = √(81 x 10⁻¹ x 10⁹) = √(81 x 10⁸) = √(81 x (10⁴)²) = 9 x 10⁴
Explications étape par étape :