Bonjour
Factoriser les expressions suivantes. Coup de pouce faire apparaître un facteur commun
A= 5x - 7+ (7 - 5x)²
A = (5x - 7) (5x - 6)
T= (5x + 2)(x + 1) + x² + 2x + 1
T = (5x + 2) (x + 1) + (x + 1)²
T = (x + 1) (5x + 2 + x + 1)
T = (x + 1) (6x + 3)
T = 3 (2x + 1) (x + 1)
H=x² + 6x + 9 - (2x - 3)(x + 3)
H = (x + 3)² - (2x - 3) (x + 3)
H = (x + 3) [(x + 3) - (2x - 3)]
H = (x + 3) (x + 3 - 2x + 3)
H = (x + 3) (- x + 6)
