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Alexlagymnaste
@Alexlagymnaste
April 2019
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HELP Vous pouvez m'aidez pour l'exo 14 :Q
( en détaillant correctement les calculs )
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winner123
Verified answer
Bonsoir
(4x - 2/3) (2 +3x)
= 8x + 12x - 4/3 - 6x/3
= 24x +36x - 4 -6x
= 54x -4
B = (3 +x/2)(4 -x)
b = = 12 - 3x + 4x/2 - x²/2
B = 24 - 6x + 4x - x²
B = -x² - 2x +24
C = ( 1 -2x/5)(3x +2)
C = 3x + 2 - 6x/5 - 4x/5
c = 15x + 10 - 6x - 4x
c = 5x +10
d = (x -3/4)(x/3 -5)
d = x²/3 - 5x - 3x /12 + 15x/4
d = 4x² - 60x - 3x + 45x
d = 4x²- 18x
1 votes
Thanks 1
Alexlagymnaste
merci beaucoup !
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Verified answer
Bonsoir(4x - 2/3) (2 +3x)
= 8x + 12x - 4/3 - 6x/3
= 24x +36x - 4 -6x
= 54x -4
B = (3 +x/2)(4 -x)
b = = 12 - 3x + 4x/2 - x²/2
B = 24 - 6x + 4x - x²
B = -x² - 2x +24
C = ( 1 -2x/5)(3x +2)
C = 3x + 2 - 6x/5 - 4x/5
c = 15x + 10 - 6x - 4x
c = 5x +10
d = (x -3/4)(x/3 -5)
d = x²/3 - 5x - 3x /12 + 15x/4
d = 4x² - 60x - 3x + 45x
d = 4x²- 18x