Sagot :
Bonsoir
2 x + 3 = 5
2 x = 5 - 3
2 x = 2
x = 1
3 x - 2 = - 4 x + 1/3
9 x /3 - 6/3 = - 12 x/3 + 1/3
9 x + 12 x = 1 + 6
21 x = 7
x = 1/3
9 x = 6 x - 1
9 x - 6 x = - 1
3 x = - 1
x = - 1/3
2 x³ - x = 3 x² - x
2 x ³ - x - 3 x² + x = 0
2 x³ - 3 x² = 0
x² ( 2 x - 3 ) = 0
x = 0 ou 3 /2
Réponse:
Bonjour
Explications étape par étape:
1. f(x) = g(x)
2x+3 = 5
2x = 5-3
2x = 2
x =2/2 = 1
2. 3x-2 = -4x + 1/3
3x +4x = 1/3 +2
7x = 7/3
x = 7/3/7 = 1/3
3. 9x = 6x -1
9x -6x = -1
3x = -1
x = -1/3
4. 2x³ -x = 3x² -x
2x³ = 3x²
2x³ -3x² = 0
x² (2x-3) = 0
x² = 0
x = 0
2x-3 = 0
2x = 3
x = 3/2