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Sagot :

Bonjour,

A: 4(3a +2b)

B: 3(x-3)

C: 5(x² -1)

D: x(6 -5x)

E: x²(x-2)

F: 5x(5x -3)

G: 7(x² -2x+7)

A:

(2x+3) ( -4x+1 + 8-x) =

(2x+3) (  -5x  +9)

B:

(4-5x) ( 8x+2 -8+x)=

(4-5x ) ( 9x -6)

C:

(9x-4)(9x-4 +2x+1)=

(9x-4) ( 11x +3)

D:

(3x-2) ( -5x+8 -3x +2)=

(3x-2) ( -8x +10)

Réponse:

bonsoir voici la réponse que je propose j'espère qu'elle t'aide

EXERCICE 1 :

A=12a+8b

A=4×3a+4×2b

A=4(3a+2b)

B=3x-9

B=3×x-3×3

B=3(x-3)

C=5x²-5

C=5×x²-5×1

C=5(x²-1)

D=6x-5x²

D=6×x-5x×x

D=x(6-5x)

E=x³-2x²

E=x²×x-x²×2

E=x²(x-2)

F=25x²-15x

F=5x×5x-5x×3

F=5x(5x-3)

G=7x²-14x+49

G=7×x²-7×2x+7×7

G=7(x²-2x+7)

EXERCICE 2 :

A=(2x+3)(-4x+1)+(2x+3)(8-x)

A=(2x+3)(-4x+1+8-x)

A=(2x+3)(9-5x)

B=(4-5x)(8x+1)-(4-5x)(8-x)

B=(4-5x)(8x+1-8+x)

B=(4-5x)(9x-7)

C=(9x-4)²+(2x+1)(9x-4)

C=(9x-4)(9x-4+2x+1)

C=(9x-4)(11x-3)

D=(3x-2)(-5x+8)-(3x-2)²

D=(3x-2)(-5x+8-3x+2)

D=(3x-2)(-8x+10)

BON COURAGE !!

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