Bonjour
Factorisation :
4x + 8 = 4 * x + 4 * 2 = 4(x + 2)
14x + 7 = 7 * 2x + 7 * 1 = 7(2x + 1)
6x^2 - 18x = 6x * x - 6x * 3 = 6x(x - 3)
5x^2 - 20x = 5x * x - 5x * 4 = 5x(x - 4)
5x^3 - 10x^2 + 15x = 5x * x^2 - 5x * 2x + 5x * 3 = 5x(x^2 - 2x + 3)
8x^3 - 6x^2 + 14x = 2x * 4x^2 - 2x * 3x + 2x * 7 = 2x(4x^2 - 3x + 7)
2(x + 4) - 3x(x + 4) = (x + 4)(2 - 3x)
7(x + 5) - 2x(x + 5) = (x + 5)(7 - 2x)
