bonjour, j'ai des équations en math a faire , vous pouvez m'aideer svp ? (x-4)(x=13)=0 x (x+3)=0 (5x-3)(2x+4)=0 (4x+3) + (x-4)=0 5x²-10x=0 (x-3)(x-2)=6
Question
(x-4)(x=13)=0
x (x+3)=0
(5x-3)(2x+4)=0
(4x+3) + (x-4)=0
5x²-10x=0
(x-3)(x-2)=6
2 Réponse
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1. Réponse loulakar
Réponse :
Explications étape par étape
Bonjour
(x-4)(x=13)=0
x - 4 = 0 ou x - 13 = 0 si c’est bien -13 ?
x = 4 ou x = 13
x (x+3)=0
x = 0 ou x + 3 = 0
x = 0 ou x = -3
(5x-3)(2x+4)=0
5x - 3 = 0 ou 2x + 4 = 0
5x = 3 ou 2x = -4
x = 3/5 ou x = -4/2
x = 3/5 ou x = -2
(4x+3) + (x-4)=0
4x + 3 + x - 4 = 0
5x - 1 = 0
5x = 1
x = 1/5
5x²-10x=0
x(5x - 10) = 0
x = 0 ou 5x - 10 = 0
x = 0 ou 5x = 10
x = 0 ou x = 10/5
x = 0 ou x = 2
(x-3)(x-2)=6
x^2 - 2x - 3x + 6 - 6 = 0
x^2 - 5x = 0
x(x - 5) = 0
x = 0 ou x - 5 = 0
x = 0 ou x = 5
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2. Réponse maudmarine
Bonjour,
(x-4)(x=13)=0
x - 4 = 0 ou x - 13 = 0
x = 4 x = 13
x (x+3)=0
x = 0 ou x + 3 = 0
x = - 3
(5x-3)(2x+4)=0
5x - 3 = 0 ou 2x + 4 = 0
5x = 3 2x = - 4
x = 3/5 x = - 4/2 = - 2
(4x+3) + (x-4)=0
4x + 3 + x - 4 = 0
4x + x = - 3 + 4
5x = 1
x = 1/5
5x²-10x=0
5x (x - 2) = 0
5x = 0 ou x - 2 = 0
x = 0 x = 2
(x-3)(x-2)=6
(x - 3) (x - 2) - 6 = 0
x² - 2x - 3x + 6 - 6 = 0
x² - 5x = 0
x (x - 5) = 0
x = 0 ou x - 5 = 0
x = 5