Bonjour,
Factoriser les expressions suivantes.
A = (2x + 3)(-4x + 1) + (2x + 3)(8 - x)
A= (2x+3)(-4x+1+8-x)
A= (2x+3)(-5x+9)
A= - (2x+3)(5x-9)
B = (4 - 5x)(8x + 1) – (4 – 5x)(7x – 5)
B= (4-5x)(8x+1-7x + 5) changement de signe
B= (4-5x)(x+6)
B= - (5x-4)(x+6)
D = (9x – 4)(2x + 1) + (9x – 4)²
D= (9x-4)(2x+1+9x-4)
C= (9x-4)(11x-3)
