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MariaaMomo
@MariaaMomo
April 2019
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Aidez moi svp :( Merci d'avance.
Exercice 1 : Développer et réduire les expressions suivantes :
A= (5x+3)(2x-4)
B= (4x-3)puissance2
C= (5x+7)(5x-7)
D=(6+10x)puissance2
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mob
A= (5x+3)(2x-4)
= 10x^2 - 20x + 6x - 12
= 10x^2 - 14x -12
B= (4x-3)^2
=(4x-3)(4x-3)
=16x^2 - 12x - 12x +9
=16x^2 - 24x +9
C= (5x+7)(5x-7)
25x^2 - 35x + 35x - 49
25x^2 -49
D= (6+10x)^2
=(6+10x)(6+10x)
=36 + 60x + 60x + 100x^2
=100^2 + 120x + 36
0 votes
Thanks 1
MariaaMomo
merci :) !
mob
De rien :)
nonoduchablais
Salut :)
A = (5x+3)(2x-4)
A = 5x x 2x + 5x x (-4) + 3 x 2x + 3 x (-4)
A = 10x² - 20x + 6x - 12
A = 10x² - 14x - 12
B= (4x-3)²
B = (4x)² - 2 x 4x x (-3) + 3²
B = 16x² - 24x + 9
C = (5x+7)(5x-7)
C = (5x)² - 7²
C = 25x² - 49
D = (6+10x)²
D = 6² + 2 x 6 x 10x + (10x)²
D = 36 + 120x + 100x²
J'espère t'avoir aidé(e)! :)
1 votes
Thanks 1
MariaaMomo
merci beaucoup
nonoduchablais
Je t'en prie ^^
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SVP, Pouvez vous m'aidez pour cette exercice ? Merci d'avance
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= 10x^2 - 20x + 6x - 12
= 10x^2 - 14x -12
B= (4x-3)^2
=(4x-3)(4x-3)
=16x^2 - 12x - 12x +9
=16x^2 - 24x +9
C= (5x+7)(5x-7)
25x^2 - 35x + 35x - 49
25x^2 -49
D= (6+10x)^2
=(6+10x)(6+10x)
=36 + 60x + 60x + 100x^2
=100^2 + 120x + 36
A = (5x+3)(2x-4)
A = 5x x 2x + 5x x (-4) + 3 x 2x + 3 x (-4)
A = 10x² - 20x + 6x - 12
A = 10x² - 14x - 12
B= (4x-3)²
B = (4x)² - 2 x 4x x (-3) + 3²
B = 16x² - 24x + 9
C = (5x+7)(5x-7)
C = (5x)² - 7²
C = 25x² - 49
D = (6+10x)²
D = 6² + 2 x 6 x 10x + (10x)²
D = 36 + 120x + 100x²
J'espère t'avoir aidé(e)! :)