Bonjour,
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Exercice 14 :
a. 4x(2x+1) = 0
4x * 2x + 4x * 1 = 0
8x² + 4x = 0
4(2x²+x) = 0
4x(2x+1) = 0
4x = 0 ou 2x + 1 = 0
x = 0 ou x =
b. (8x+3)² = 0
8x+3 = 0
x =
c. (x+3) (2x-1) (5-3x) = 0
x+3 = 0 ou 2x-1 = 0 ou 5-3x = 0
x = -3 ou x = ou x =
Au plaisir d'avoir aidée :)
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Bonjour,
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Exercice 14 :
a. 4x(2x+1) = 0
4x * 2x + 4x * 1 = 0
8x² + 4x = 0
4(2x²+x) = 0
4x(2x+1) = 0
4x = 0 ou 2x + 1 = 0
x = 0 ou x =
b. (8x+3)² = 0
8x+3 = 0
x =
c. (x+3) (2x-1) (5-3x) = 0
x+3 = 0 ou 2x-1 = 0 ou 5-3x = 0
x = -3 ou x = ou x =
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Au plaisir d'avoir aidée :)