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Rose08
@Rose08
April 2019
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Pouvez vous m'aider pour les exercices 23 a 25 s'il vous plait ?
Urgent !
Résoudre chacune des équitations
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geekkhalil
Salut :)
23)
(4x-8)(3x-1)=0
4 (3x²-7 x+2) = 0
12 x²-28 x+8 = 0
alors
x = 1/3 ou
x = 2
(-5x+10)(7x-3)=0
-5 (x-2) (7 x-3) = 0
-35 x²+85 x-30 = 0
alors
x = 3/7 ou x=2
25)
(1/2x+1)(2/3x+4)=0
1/3 (x+2) (x+6) = 0
x²/3+(8 x)/3+4 = 0
alors
x= -6 ou x= -2
(5/3x-7)(5/3x+6)=0
1/9 (5 x-21) (5 x+18) = 0
(25 x²)/9-(5 x)/3-42 = 0
alors
x = -18/5 ou
x = 21/5
bonne journee
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23)
(4x-8)(3x-1)=0
4 (3x²-7 x+2) = 0
12 x²-28 x+8 = 0
alors
x = 1/3 ou x = 2
(-5x+10)(7x-3)=0
-5 (x-2) (7 x-3) = 0
-35 x²+85 x-30 = 0
alors
x = 3/7 ou x=2
25)
(1/2x+1)(2/3x+4)=0
1/3 (x+2) (x+6) = 0
x²/3+(8 x)/3+4 = 0
alors
x= -6 ou x= -2
(5/3x-7)(5/3x+6)=0
1/9 (5 x-21) (5 x+18) = 0
(25 x²)/9-(5 x)/3-42 = 0
alors
x = -18/5 ou x = 21/5
bonne journee