Bonjour,
Factoriser les expressions suivantes :
A = 12x² + 24x= 12x(x+2)
B = 8x² - x= x(8x-1)
C = (5x-2)(3x + 4) + (3x + 4)(-x + 3)= (3x+4)(5x-2-x+3)= (3x+4)(4x+1)
D = (x + 1)² - 3(x + 1) + x + 1= (x+1)(x+1-3+1)= (x+1)(x-1)
E = (x - 1)(7x + 5) + 2(x − 1) - (x - 1)= (x-1)(7x+5+2-1)= (x-1)(7x+6)
