Réponse:
bonsoir
Explications étape par étape:
A = 3 (×-2)^2 -(4×-7)(×-2)
= (×-2)[3 (×-2)-(4×-7)]
= (×-2)(3×-6-4×+7)
=(×-2)(-×+1)
B = 15x^2 (×+3)-6×(×+3)
=(×+3)(15×^2-6×)
=3×(×+3)(5×-2)
C = (2×-1)^2 -(2×-1)^2 (3×+2)
=(2×-1)^2 (1-(3×+2))
=(2×-1)^2 (1-3×-2)
=(2×-1)^2 (-1-3×)
= -(2×-1)^2 (1+3×)
D = 6 (×-2)(×-3)-5×(3-×)
=6 (×-2)(×-3)+5×(×-3)
=(×-3)(6 (×-2)+5×)
=(×-3)(6×-12+5×)
=(×-3)(11×-12)
E = 1/4 ×^2 -2× +4
=(1/2×)^2 -2 × 1/2x ×2 +2^2
=(1/2× -2)^2
F = 4×^2 +12× +9
= (2×)^2 + 2 × 2× × 3 +3^2
=(2×+3)^2
F = x^2 -2×V3 +3
=x^2 -2×V3 + V3^2
=(×-V3)^2
G=×^2-36
=(×-6)(×+6)
N.B : ^2 puissance 2
V3 racine de 3
