Pouvez vous m'aider s'il vous plait j'y arrive pas. il faut factoriser les expressions suivantes Exemple : A= ( 10x - 10 ) - ( 10x - 6 ) ( 10x - 7 ) = ( 10x - 7

Bonjour

A = -(-9x + 10)(4x - 3) - (4x - 3)

A = -(4x - 3)(-9x + 10 + 1)

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

B = 64x^2 - 36

B = (8x)^2 - 6^2

B = (8x - 6)(8x + 6)

B = 2(4x - 3) * 2(4x + 3)

B = 4(4x - 3)(4x + 3)

C = -(-8x + 8)(6x + 2) + (-8x + 8)(9x - 6)

C = (-8x + 8)(-6x - 2 + 9x - 6)

C = 8(-x + 1)(3x - 8)

D = (3x + 8)(-x + 4) + 9x^2 - 64

D = (3x + 8)(-x + 4) + (3x)^2 - 8^2

D = (3x + 8)(-x + 4) + (3x - 8)(3x + 8)

D = (3x + 8)(-x + 4 + 3x - 8)

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

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

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

E = (-7x - 9)^2 - 49

E = (-7x - 9)^2 - 7^2

E = (-7x - 9 - 7)(-7x - 9 + 7)

E = (-7x - 16)(-7x - 2)

F = (-9x + 1)^2 + (-9x + 1)(-5x + 7)

F = (-9x + 1)(-9x + 1 - 5x + 7)

F = (-9x + 1)(-14x + 8)

F = (-9x + 1) * 2(-7x + 4)

F = 2(-9x + 1)(-7x + 4)

Exercice 6 :

A = (-3x + 6)(2x - 1) + (-5x + 1)(-3x + 6)

A = (-3x + 6)(2x - 1 - 5x + 1)

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

A = -9x(-x + 2)

B = (-x - 5)^2 - 25

B = (-x - 5)^2 - 5^2

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

B = (-x - 10)(-x)

B = -x(-x - 10)

B = -x * (-1)(x + 10)

B = x(x + 10)

C = -(-10x + 4)(-10x - 5) + (-10x - 5)

C = -(-10x - 5)(-10x + 4 - 1)

C = -(-10x - 5)(-10x + 3)

D = 81x^2 - 36

D = (9x)^2 - 6^2

D = (9x - 6)(9x + 6)

D = 3(3x - 2) * 3(3x + 2)

D = 9(3x - 2)(3x + 2)

E = (10x + 9)(-4x - 2) + (-4x - 2)^2

E = (-4x - 2)(10x + 9 - 4x - 2)

E = -2(2x + 1)(6x + 7)

F = -(-10x - 4)(9x - 5) + 81x^2 - 25

F = -(-10x - 4)(9x - 5) + (9x)^2 - 5^2

F = (10x + 4)(9x - 5) + (9x - 5)(9x + 5)

F = (9x - 5)(10x + 4 + 9x + 5)

F = (9x - 5)(19x + 9)