Sagot :
Bonjour
Factorisation
(3x+1)(5-4x)-(5-4x)²
= (5 - 4x) [(3x + 1) - (5 - 4x)]
= (5 - 4x) (3x + 1 - 5 + 4x)
= (5 - 4x) (7x - 4)
Bonjour
Factorisation
(3x+1)(5-4x)-(5-4x)²
= (5 - 4x) [(3x + 1) - (5 - 4x)]
= (5 - 4x) (3x + 1 - 5 + 4x)
= (5 - 4x) (7x - 4)