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Siazzle
@Siazzle
April 2019
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SVP QUELQU'UN POURRAIT M'AIDER C URGENT !!
Résoudre l'équation :
4-(x-1)au carré = 2x + 1
Merci bcp à tous ceux qui le feront
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Commentaires (2)
Verified answer
Bonjour,
4-(x-1)² = 2x+1
4-(x²-2x+1)-(2x+1) = 0
4-x²+2x-1-2x-1 = 0
-x²+2 = 0
-x² = - 2
x² = 2
x = √2 ou - √2
1 votes
Thanks 1
siazzle
merci
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Verified answer
Bonjour,4-(x-1)² = 2x+1
4-(x²-2x+1)-(2x+1) = 0
4-x²+2x-1-2x-1 = 0
-x²+2 = 0
-x² = - 2
x² = 2
x = √2 ou - √2