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Abbar05
@Abbar05
May 2019
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Bonsoir a tous.
J'ai un petit problème avec un calcul mais c'est urgent. J'aimerai que l'on m'aide avec une gentillesse a resoudre
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scoladan
Verified answer
Bonjour,
a/b x c/d = a/d x c/b
Donc :
... = 3ⁿ⁺¹/3ⁿ x 5ⁿ⁺²/5ⁿ⁺³
= 3 x 1/5
= 3/5
0 votes
Thanks 1
Abbar05
peut tu m'aider pour l exercice que jai poster en dernier s'il te plait
loulakar
Verified answer
3^(n+1) / 5^(n+3) x 5^(n+2) / 3^n =
3^(n+1) / 3^n x 5^(n+2) / 5^(n+3) =
3^(n+1) x 3^(-n) x 5^(n+2) x 5^(-n-3) =
3^(n+1-n) x 5^(n+2-n-3) =
3^1 x 5^(-1) = 3 / 5
1 votes
Thanks 1
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Lista de comentários
Verified answer
Bonjour,a/b x c/d = a/d x c/b
Donc :
... = 3ⁿ⁺¹/3ⁿ x 5ⁿ⁺²/5ⁿ⁺³
= 3 x 1/5
= 3/5
Verified answer
3^(n+1) / 5^(n+3) x 5^(n+2) / 3^n =3^(n+1) / 3^n x 5^(n+2) / 5^(n+3) =
3^(n+1) x 3^(-n) x 5^(n+2) x 5^(-n-3) =
3^(n+1-n) x 5^(n+2-n-3) =
3^1 x 5^(-1) = 3 / 5