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LifeMdr
@LifeMdr
May 2019
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Bonjour,
j'ai essayé de résoudre une équation du second degré et j'aimerais savoir si j'ai eu bon
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trudelmichel
Bonjour,
2(x-4)²=5
(x-4)²=5/2
(x-4)²=2.5
(x-4)²-2.5=0
(x-4)²-√2.5²=0
((x-4)+√2.5)((x-4-√2.5)=0
(x-4+√2.5)(x-4-√2.5)=0
x-4+√2.5=0 x=4-√2.5
x-4-√2.5=0 x=4+√2.5
2 votes
Thanks 1
LifeMdr
merci beaucoup
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Lista de comentários
2(x-4)²=5
(x-4)²=5/2
(x-4)²=2.5
(x-4)²-2.5=0
(x-4)²-√2.5²=0
((x-4)+√2.5)((x-4-√2.5)=0
(x-4+√2.5)(x-4-√2.5)=0
x-4+√2.5=0 x=4-√2.5
x-4-√2.5=0 x=4+√2.5