Bonjour
a. Factoriser
E (x) = (3x - 7) + (3x - 7) (2x - 4)
E (x) = (3x - 7) (1 + 2x - 4)
E (x) = (3x - 7) (2x - 3)
b. Equation E (x) = 0
(3x - 7) = 0 ou 2x - 3 = 0
3x = 7 2x = 3
x = 7/3 x = 3/2
