Réponse:

A= (x-2)(-x+1)

B= 3x(x+3)(5x-2)

C= (2x-1)au carré (-1-3x)

D= (x-3)(6x-7)

E= ¼(x-4)au carré

F= (2x+3)au carré

G= (x- racine de 3)au carré

H= (x-6)(x+6)

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