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Sagot :

Réponse :

Explications étape par étape

bonjour

a=0.28x10⁴x24x10⁴/1680x(10⁹)⁵

=6.72x10⁸/1680x10⁴⁵

=0.004x10⁻³⁷

=4x10⁻⁴⁰

b=150x10¹x0.45x10⁻⁷/150x(10⁻⁵)³

=67.5x10⁻⁶/150x10⁻¹⁵

=0.45x10⁹

=4.5x10⁸

c=0.15x10⁻¹x0.1x10⁷/24x(10⁻⁶)⁵

=0.015x10⁶/24x10⁻³⁰

=0.000625x10³⁶

=6.25x10³²

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