Donner B (-2)puissance4 x 4 puissance-5 8 puissance -3Sous la forme 2 puiss.... Pergunta de ideia de62550

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Donner B (-2)puissance4 x 4 puissance-5
8 puissance -3

Sous la forme 2 puissance 3

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slyz007

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$4^{-5}=(2^{2})^{-5}=2^{-10}$

$8^{-3}=(2^{3})^{-3}=2^{-9}$

$B=\frac{2^{4}*2^{-10}}{2^{-9}}=\frac{2^{4}*2^{9}}{2^{10}}$

$B= \frac{2^{13}}{2^{10}}=2^{13-10}=2^{3}$

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