Réponse :
Explications étape par étape
Bonjour
Factoriser :
A = (-3x + 3)^2 - 1
A = (-3x + 3)^2 - 1^2
A = (-3x + 3 - 1)(-3x + 3 + 1)
A = (-3x + 2)(-3x + 4)
B = (9x - 7)(-10x + 1) + (-10x + 10)(-10x + 1)
B = (-10x + 1)(9x - 7 - 10x + 10)
B = (-10x + 1)(-x + 3)
C = 4x^2 - 36 - (2x + 6)(-3x - 9)
C = (2x)^2 - 6^2 - (2x + 6)(-3x - 9)
C = (2x - 6)(2x + 6) - (2x + 6)(-3x - 9)
C = (2x + 6)(2x - 6 + 3x + 9)
C = (2x + 6)(5x + 3)
C = 2(x + 3)(5x + 3)
