Bonjour,
Factoriser les expressions :
E = (2x + 1)² + (2x + 1)
E = (2x + 1)(2x + 1) + (2x + 1)*1
E = (2x + 1)(2x + 1 + 1)
E = (2x + 1)(2x + 2)
E = 2(x + 1)(2x + 1)
F = (2x - 3)² - (2x - 3)
F = (2x - 3)(2x - 3) - (2x - 3)*1
F = (2x - 3)(2x - 3 - 1)
F = (2x - 3)(2x - 4)
F = 2(x - 2)(2x - 3)
* = multiplication
Bonne journée.
