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Abby0
@Abby0
April 2019
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Bonjour aidez moi pleeeez
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winner123
Verified answer
Bonjour
I) (x +5)² + ( x + 5)(x 1) = 0
1) (x +5) ( x +5)
2) (x + 5) ( x +5) + ( x +5) ( x +1) = 0
(x +5) ( x + 5 + 1 + x + 1) = 0
( x + 5) ( 2 x + 7) = 0
soit x +5 = 0 et x = - 5
soit 2 x + 7= 0
2 x = - 7 et x = - 7/2
II) (2 x +3)² - 4 = 0
1) ( 2 x + 3 - 2) ( 2 x + 3 +2) = 0
(2 x + 1) ( 2 x + 5) = 0
même raisonnement que au dessus
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Verified answer
BonjourI) (x +5)² + ( x + 5)(x 1) = 0
1) (x +5) ( x +5)
2) (x + 5) ( x +5) + ( x +5) ( x +1) = 0
(x +5) ( x + 5 + 1 + x + 1) = 0
( x + 5) ( 2 x + 7) = 0
soit x +5 = 0 et x = - 5
soit 2 x + 7= 0
2 x = - 7 et x = - 7/2
II) (2 x +3)² - 4 = 0
1) ( 2 x + 3 - 2) ( 2 x + 3 +2) = 0
(2 x + 1) ( 2 x + 5) = 0
même raisonnement que au dessus