Sagot :
Bonjour !
A = 2x + 6x - 5x
A = 8x - 5x
A = 3x
B = 5x² + 3x²
B = 8x²
D = a² - 5a² + 2a²
D = -4a² + 2a²
D = -2a²
E = 3/5x + 1/5x
E = 4/5x
F = -1/3y² + 5/6y²
F = -2/6y² + 5/6y²
F = 3/6y²
F = 1/2y²
J'espère t'avoir aidé. Bon courage !
Bonjour,
2x + 6x - 5x = (2 + 6 - 5)x = 3x
5x² + 3x² = (5 + 3)x² = 8x²
a² - 5a² + 2a² = (1 - 5 + 2)a² = -2a²
3/5x + 1/5x = (3/5 + 1/5)x = 4/5x
-1/3y² + 5/6y² = (-1/3 + 5/6)y² = (-2/6 + 5/6)y² = 3/6y² = 1/2y²