Bonjour, j'ai beaucoup d'expressions à factoriser mais je n'y arrive pas! Ça fait plusieurs heures que j'y suis, je remercies d'avance ceux qui m'aideront! Vous

Bonsoir

♧ On a donc :

A = (x+3)(x+4)+(x+3)(x+6)
A = (x+3)[(x+4)+(x+6)]
A = (x+3)(2x+10)

B = (x-9)(3x-7)-(x-9)(x+11)
B = (x-9)[(3x-7)-(x+11)]
B = (x-9)(3x-7-x-11)
B = (x-9)(2x-18)

C = (3x-6)(2x-2)-(2x-2)(-9x+5)
C = (2x-2)[(3x-6)-(-9x+5)]
C = (2x-2)(3x-6+9x-5)
C = (2x-2)(12x-11)

D = (1-5x)(x+5)+(x+5)²
D = (x+5)[(1-5x)+(x+5)]
D = (x+5)(-4x+6)

♧ Tu termines ...

Voilà ^^

Bonsoir,

A=(x+3)(x+4)+(x+3)(x+6)
A = (x + 3)(x + 4 + x + 6)
A = (x + 3)(2x + 10)
A = 2(x + 3)(x + 5)

B=(x-9)(3x-7)-(x-9)(x+11)
B = (x - 9)(3x - 7 - x - 11)
B = (x - 9)(2x - 18)
B = 2(x - 9)(x - 9)
B = 2(x - 9)^2

C=(3x-6)(2x-2)-(2x-2)(-9x+5)
C = (2x - 2)(3x - 6 + 9x - 5)
C = 2(x - 1)(12x - 11)

D=(1-5x)(x+5)+(x+5)²
D = (x + 5)(1 - 5x + x + 5)
D = (x + 5)(-4x + 6)
D = 2(x + 5)(-2x + 3)

E=5x+7-3(8+5x)
E = 5x + 7 - 24 - 15x
E = -10x - 17
E = es tu sur de l’énoncé ?

F= -7x+3-9(-2+x)
F = -7x + 3 + 18 - 9x
F = -16x + 21
F = es tu sur de l’enonce ?

G=2(1+3x²)+x(4x²-5) ?

H=(2x+1)(5x-3) ?

I=5x+1+(x+4)(x-9) ?

J= -(2x-5)(3-5x)+(6x-9)(-2x-1) ?

K=(2x+1)(3x+5)+(4x+2)(2x+1)
K = (2x + 1)(3x + 5 + 4x + 2)
K = (2x + 1)(7x + 7)
K = 7(2x + 1)(x + 1)

L=(x-2)(x+3)+(x-2)(4x-1)
L = (x - 2)(x + 3 + 4x - 1)
L = (x - 2)(5x + 2)

M=(5x-3)(2x-5)-x(5x-3)
M = (5x - 3)(2x - 5 - x)
M = (5x - 3)(x - 5)

N=(x+1)(x+3)-5(x+3)
N = (x + 3)(x + 1 - 5)
N = (x + 3)(x - 4)