B=8x(5x+3)-7(5x+3)
B=(5x+3)[8x-7]
D=(9x-4)(7x+2)-(7x+2)(5x+1)
D=(7x+2)[(9x-4)-(5x+1)]
D=(7x+2)[4x-5]
E=(5x-3)(8x-7)+(5x-3)
E=(5x-3)(8x-7)+(5x-3)*1
E=(5x-3)[(8x-7)+1]
E=(5x-3)[8x-6]
(On met en facteurs (5x-3))
G=(x-3)(5x+4)+(x-3)(x-3)
G=(x-3)[5x+4)+(x-3)]
G=(x-3)[5x+4+x-3]
G=(x-3)[6x+1]
(On met (x-3) en facteurs)
