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alexandrinedin
@alexandrinedin
June 2021
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Devoir de 4ème que j ai a faire pour la rentré mais je n'y arrive pas ;(
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Yasmi8520
Tu dois remplacer a par -2/3
A= (-2/3 + 2)(-2/3 - 2)
A= 4/9 - 4
B= 2 - 1: -2/3
B= 2 - 1x -3/2
B= 4/2 + 3/2
B= 7/2
C= -2/3 : (-2/3 +2)
C= -2/3 x (-3/2 +1/2 )
C= -2/3 x -2/2
C= 2/3
D= (-2/3 + 1)(-2/3 - 1)
D= 4/9 - 1
E= (1 : -2/3 + 1)(1 : -2/3 - 1)
E= (1 x -3/2 + 1)(1 x -3/2 + 1)
E= 9/4 - 1
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Thanks 1
alexandrinedin
en être vous sûre car j ai publier la même chose et on ne m'a pas passer les même résultat?
alexandrinedin
??
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A= (-2/3 + 2)(-2/3 - 2)
A= 4/9 - 4
B= 2 - 1: -2/3
B= 2 - 1x -3/2
B= 4/2 + 3/2
B= 7/2
C= -2/3 : (-2/3 +2)
C= -2/3 x (-3/2 +1/2 )
C= -2/3 x -2/2
C= 2/3
D= (-2/3 + 1)(-2/3 - 1)
D= 4/9 - 1
E= (1 : -2/3 + 1)(1 : -2/3 - 1)
E= (1 x -3/2 + 1)(1 x -3/2 + 1)
E= 9/4 - 1