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Assia28
@Assia28
January 2021
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Bonjour qui pourrez m'aidez a résoudre des équations ? voici la photo en dessous
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rosiemuller2000
Verified answer
Coucou
je t ai fait les calculs c est en photo
voila j espere t avoir aider
1 votes
Thanks 1
Assia28
merci
rosiemuller2000
derien
loulakar
Verified answer
A) 5(-2x+1)-(3x-5)=2x
-10x + 5 - 3x + 5 = 2x
10 = 10x + 3x + 2x
15x = 10
x = 10/15
x = 2/3
B)
(4x+7)/6 - (-8x-1)/(3/4)=9x+2
(4x+7)/6 +(8x+1)*(4/3)=9x+2
(4x+7)/6 +(32x+4)/3=9x+2
(4x+7)/6 +(64x+8)/6=9x+2
(68x+15)/6 = 9x+2
68x+15 = 6(9x+2)
68x + 15 = 54x + 12
68x - 54x = 12 - 15
14x = -3
x = (-3/14)
C) x^2 - 5 = 0
x^2 = 5
x = V5 ou x = -V5
D) (x - 3)^2 - 36 = 0
(x - 3)^2 - (6)^2 = 0
(x - 3 - 6)(x - 3 + 6) = 0
(x - 9)(x + 3) = 0
x - 9 = 0
x = 9
Ou x + 3 = 0
x = -3
E) (2x + 3)^2 = (3x - 7)^2
(2x + 3)^2 - (3x - 7)^2 = 0
(2x+3-3x+7)(2x+3+3x-7)=0
(-x + 10)(5x - 4) = 0
-x + 10 = 0
x = 10
Ou
5x - 4 = 0
5x = 4
x = 4/5
0 votes
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Assia28
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Pouvez vous m'aidez svp ? c'est urgent c'est pour demain et c'est notez merci d'avance
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Pouvez vous m'aidez svp pour mon dm c'est pour Demain ?
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Bonjour , est ce que quelqu'un pourrais m'aider et m'expliquer le sujet svp , merci
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Pouvez vous m'aidez pour mon dm de maths svp , pour demain ?
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Verified answer
Coucouje t ai fait les calculs c est en photo
voila j espere t avoir aider
Verified answer
A) 5(-2x+1)-(3x-5)=2x-10x + 5 - 3x + 5 = 2x
10 = 10x + 3x + 2x
15x = 10
x = 10/15
x = 2/3
B)
(4x+7)/6 - (-8x-1)/(3/4)=9x+2
(4x+7)/6 +(8x+1)*(4/3)=9x+2
(4x+7)/6 +(32x+4)/3=9x+2
(4x+7)/6 +(64x+8)/6=9x+2
(68x+15)/6 = 9x+2
68x+15 = 6(9x+2)
68x + 15 = 54x + 12
68x - 54x = 12 - 15
14x = -3
x = (-3/14)
C) x^2 - 5 = 0
x^2 = 5
x = V5 ou x = -V5
D) (x - 3)^2 - 36 = 0
(x - 3)^2 - (6)^2 = 0
(x - 3 - 6)(x - 3 + 6) = 0
(x - 9)(x + 3) = 0
x - 9 = 0
x = 9
Ou x + 3 = 0
x = -3
E) (2x + 3)^2 = (3x - 7)^2
(2x + 3)^2 - (3x - 7)^2 = 0
(2x+3-3x+7)(2x+3+3x-7)=0
(-x + 10)(5x - 4) = 0
-x + 10 = 0
x = 10
Ou
5x - 4 = 0
5x = 4
x = 4/5