Réponse:
G = 6x 3x + 6x5 - 3x x 2 - 3x x 5x
= 18x + 30 - 6x - 15x(au carré)
= 15x(au carré) + 18x - 6x + 30
= 15x(au carré) + 12x + 30
H = x x 5x + x x 11 - 7 x 5x - 7 x 11
= 5x + 11x - 35x - 77
=16x-35x- 77
= -19-77
= - 96
J = 4y + 5 + y
= 5y +5
I = - 4 x 3 + 4 x 8x + 3x x 3 - 3x x 8x
= - 12 + 32x + 9x - 24x(au carré)
= 24x(au carré) - 12 + 32x + 9x
= 24x(au carré) - 12 + 41x
