Exercice n°6: Ecrire chacun des nombres suivants sous la forme du produit de puissances de 2, 3 et/ou 5.

A=
[tex]20[/tex]
B=
[tex] {45}^{2} [/tex]
C=
[tex] {15}^{3} \times {12}^{ - 3} [/tex]
D=
[tex] \frac{12 \times {2}^{ - 2} }{ {3}^{4} } [/tex]
E=
[tex] \frac{ {200}^{4} \times {15}^{ - 8} }{ {12}^{6} } [/tex]


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