Réponse :
donne le résultat en écriture scientifique
A = 45 x 10¹² x 4 x 10⁻²⁶ = 180 x 10¹² x 10⁻²⁶ = 1.8 x 10¹⁴ x 10⁻²⁶ = 1.8 x 10⁻¹²
B = (2 500 000 000)² = (25 x 10⁸)² = 25² x 10¹⁶ = 625 x 10¹⁶ = 6.25 x 10¹⁸
C = 36 x 10¹⁵/3 x 10⁻¹⁷ = 12 x 10¹⁵ x 10¹⁷ = 12 x 10³² = 1.2 x 10³³
D = 36 x 10⁻⁶ x 25 x 10⁵/4.5 x 10⁻⁴ = 900 x 10⁻¹/4.5 x 10⁻⁴
= 9 x 10² x 10⁻¹/4.5 x 10⁻⁴ = 9 x 10¹/4.5 x 10⁻⁴ = 2 x 10¹ x 10⁴ = 2 x 10⁵
E = 5.6 x 10⁸ x 8 x 10⁻⁹/14 x 10⁻⁴ x 16 x 10⁻⁶ = 44.8 x 10⁻¹/224 x 10⁻¹⁰
= 0.2 x 10⁻¹ x 10¹⁰ = 2 x 10⁻¹ x 10⁻¹ x 10¹⁰ = 2 x 10⁻² x 10¹⁰ = 2 x 10⁸
Explications étape par étape
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Réponse :
donne le résultat en écriture scientifique
A = 45 x 10¹² x 4 x 10⁻²⁶ = 180 x 10¹² x 10⁻²⁶ = 1.8 x 10¹⁴ x 10⁻²⁶ = 1.8 x 10⁻¹²
B = (2 500 000 000)² = (25 x 10⁸)² = 25² x 10¹⁶ = 625 x 10¹⁶ = 6.25 x 10¹⁸
C = 36 x 10¹⁵/3 x 10⁻¹⁷ = 12 x 10¹⁵ x 10¹⁷ = 12 x 10³² = 1.2 x 10³³
D = 36 x 10⁻⁶ x 25 x 10⁵/4.5 x 10⁻⁴ = 900 x 10⁻¹/4.5 x 10⁻⁴
= 9 x 10² x 10⁻¹/4.5 x 10⁻⁴ = 9 x 10¹/4.5 x 10⁻⁴ = 2 x 10¹ x 10⁴ = 2 x 10⁵
E = 5.6 x 10⁸ x 8 x 10⁻⁹/14 x 10⁻⁴ x 16 x 10⁻⁶ = 44.8 x 10⁻¹/224 x 10⁻¹⁰
= 0.2 x 10⁻¹ x 10¹⁰ = 2 x 10⁻¹ x 10⁻¹ x 10¹⁰ = 2 x 10⁻² x 10¹⁰ = 2 x 10⁸
Explications étape par étape