Réponse :
(^2 signifie au carré)
Utilise les identités remarquables
A = (x-10)^2 = x^2 -10x -10x +100 = x^2 -20x +100
B = (8x-7)(8x+7) = 64x^2 -56x +56x -49 = 64x^2 -49
C = (-6x-1)^2 = 36x^2 +6x +6x +1 = 36x^2 +12x +1
D = (4+2x)(4-2x) = -4x^2 +8x -8x +16 =-4x^2 +16
E = (11-3x)^2 = 9x^2 -33x -33x +121 = 9x^2 -66x +121
F = (x+12)(12-x) = -x^2 -12x +12x +144 = -x^2 +144
