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Asianaiglon
@Asianaiglon
April 2019
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Développer et réduire les équations suivantes : A = (7y + 4)^2 + (9y - 3) ^2 B = 9y (y-9) - (7y+2) ^2 C = (5y-6) (3y-7) - (5y-6) (5y+6) Merci d'avance ;)
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winner123
Verified answer
Bonsoir
A = (7y + 4)^2 + (9y - 3) ^2
a = 49y² + 56 y +16 + 81y² - 54y +9
a = 130 y² +2 y + 25
B = 9y (y-9) - (7y+2) ^2
b = 81y² -81y - (49y² + 28y +4)
b = 81y² -81y -49y²-28y-4
b = 32y² -109y -4
C = (5y-6) (3y-7) - (5y-6) (5y+6)
c = 15y² -35y -18y +42 - ( 25y² +30y -30y -36)
c = 15y² -53y +42 - 25y² +36
c = -10y² -53y + 78
Ce ne sont pas des équations.
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Verified answer
BonsoirA = (7y + 4)^2 + (9y - 3) ^2
a = 49y² + 56 y +16 + 81y² - 54y +9
a = 130 y² +2 y + 25
B = 9y (y-9) - (7y+2) ^2
b = 81y² -81y - (49y² + 28y +4)
b = 81y² -81y -49y²-28y-4
b = 32y² -109y -4
C = (5y-6) (3y-7) - (5y-6) (5y+6)
c = 15y² -35y -18y +42 - ( 25y² +30y -30y -36)
c = 15y² -53y +42 - 25y² +36
c = -10y² -53y + 78
Ce ne sont pas des équations.