Réponse :
a^2 - b^2 = (a - b)(a + b)
Explications étape par étape
Bonjour
C(x) = 64x^2 - 49
C(x) = (8x)^2 - 7^2
C(x) = (8x - 7)(8x + 7)
E(x) = (6x - 5)^2 - (3 - 4x)^2
E(x) = (6x - 5 - 3 + 4x)(6x - 5 + 3 - 4x)
E(x) = (10x - 8)(2x - 2)
E(x) = 2(5x - 4) * 2(x - 1)
E(x) = 4(5x - 4)(x - 1)
F(x) = 5x + 1 + (x - 3)(5x + 1)
F(x) = (5x + 1)(1 + x - 3)
F(x) = (5x + 1)(x - 2)
