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Lili95420
@Lili95420
May 2019
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Bonjour je suis en 4eme et jai un devoirs en maths a rendre pour lundi mais jai un probleme pouvez vous maider a cette exercice
Develloper et reduire les expressions suivantes
A=10x-(2y+5x-12)-10y
B=2(x-3y)+3(x+4y)
C=3x(2x-5)-6x au carré -12x-3)
D=(3x+5)(2x-1)+9x au carré-25
E=4x(2x+5)-(x-4) (3x-2)
Repondez moi au plus vite Svp
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guitare57
A) 10x-(2y+5x-12)-10y
10x-2y-5x+12-10y
10x-5x-2y-10y+12
5x-12y+12
B) 2(x-3y)+3(x+4y)
2x-6y+3x+12y
2x+3x-6y+12y
5x+6y
C) 3x(2x-5)-(6x²-12x-3)
6x²-15x-6x²+12x+3
6x²-6x²-15x+12x+3
-3x+3
D) (3x+5)(2x-1)+9x²-25
6x²-3x+10x-5+9x²-25
6x²+9x²-3x+10x-5-25
15x²+7x-30
E) 4x(2x+5)-(x-4)(3x-2)
8x²+20x-(3x²-2x-12x+8)
8x²+20x-3x²+2x+12x-8
8x²-3x²+20x+2x+12x-8
5x²+34x-8
Voilà j'espère t'avoir aidé
0 votes
Thanks 1
Lili95420
Merci beaucoup
guitare57
de rien et bonne chance
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Svp jai besoin daide ex 34 et 4
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Lista de comentários
10x-2y-5x+12-10y
10x-5x-2y-10y+12
5x-12y+12
B) 2(x-3y)+3(x+4y)
2x-6y+3x+12y
2x+3x-6y+12y
5x+6y
C) 3x(2x-5)-(6x²-12x-3)
6x²-15x-6x²+12x+3
6x²-6x²-15x+12x+3
-3x+3
D) (3x+5)(2x-1)+9x²-25
6x²-3x+10x-5+9x²-25
6x²+9x²-3x+10x-5-25
15x²+7x-30
E) 4x(2x+5)-(x-4)(3x-2)
8x²+20x-(3x²-2x-12x+8)
8x²+20x-3x²+2x+12x-8
8x²-3x²+20x+2x+12x-8
5x²+34x-8
Voilà j'espère t'avoir aidé