Bonjour
Identité remarquable :
a^2 - b^2 = (a - b)(a + b)
9x^2 - 64
= (3x)^2 - 8^2
= (3x - 8)(3x + 8)
(6v + 6)^2 - 100
= (6v + 6)^2 - 10^2
= (6v + 6 - 10)(6v + 6 + 10)
= (6v - 4)(6v + 16)
= 2(3v - 2) * 2(3v + 8)
= 4(3v - 2)(3v + 8)
