bonsoir
A(x) = (5x + 4)(x - 2) + (5x + 4)(8 - 3x)
(5x+4)(x-2+8-3x)
(5x+4)(-2x+6)
2(-x+3)(5x+4)
B(x) = (x + 4)(3x - 2) - (7x + 4)(3x – 2)
(3x-2)(x+4-7x-4)
-6x(3x-2)
C(x) = (x + 4)(2x - 7) + 3x(x + 4)
(x+4)(2x-7+3x)
(x+4)(5x-7)
D(x) = 5(8 - 3x)-(-3x + 11)(8 - 3x)
(8-3x)(+5+3x-11)
(8-3x)(-6+3x)
3(x-2)(8-3x)
E(x) = (4x - 21) (9x - 7) + (9x – 7)(-6x–9)
(9x-7)(4x-21-6x-9)
(9x-7)(-2x-30)
2(-x-15)(9x-7)
F(x) = (-7x + 1)(x + 2) - (-9 - 5x)(-7x + 1)
(-7x+1)(x+2+9+5x)
(-7x+1)(6x+11)
