Développer les expressions suivantes
A = (4x+3)(2x+6)
B = (6x+3)(2x+1)
C = (4x-5)(2x+3)
D = (5x+2)(3x-2)
E = (2x-7)(4x-3)
F = (3+4x) (2x+1)
G=(5-2x)²
H = (4+6x) (7-5x)
1 = (3-4x) (2x+5)
J = (5-2x)(2x-7)