Bonjour pouvez vous m'explique et m'aider sltp ​

Bonjour,

Exercice 1. Factoriser:

• k(a + b) = ka + kb

A(x) = 6x + 18 (6*x + 6*3)

= 6(x + 3)

B(x) = 45 - 18x (9*5 - 9*2x)

= 9(5 - 2x)

C(x) = 8x - 56 (8*x - 8*7)

= 8(x - 7)

D(x) = 7x² - 21x (7x*x - 7x*3)

= 7x(x - 3)

E(x) = 15x - 10 (5*3x - 5*2)

= 5(3x - 2)

F(x) = 39x + 26x² ( 13x*3 + 13x*2x)

= 13x(3 + 2x)

Exercice 2. Factoriser:

A(x) = (5x + 4)(x - 2) + (5x + 4)(8 - 3x)

A(x) = (5x + 4)(x - 2 + 8 - 3x)

A(x) = (5x + 4)(-2x + 6)

B(x) = (x + 4)(3x - 2) - (7x + 4)(3x - 2)

B(x) = (3x + 2)(x + 4 - (7x + 4))

B(x) = (3x + 2)(x + 4 - 7x - 4)

B(x) = -6x(3x + 2)

C(x) = (x + 4)(2x - 7) + 3x(x + 4)

C(x) = (x + 4)(2x - 7 + 1)

C(x) = (x + 4)(2x - 6)

D(x) = 5(8 - 3x) - (-3x + 11)(8x - 3)

D(x) = (8 - 3x)(5 - (-3x + 11)

D(x) = (8 - 3x)( 5 + 3x - 11)

D(x) = (8 - 3x)(3x - 6)

E(x) = (4x - 21)(9x - 7) + (9x - 7)(-6x - 9)

E(x) = (9x - 7)(4x - 21 - 6x - 9)

E(x) = (9x - 7)(-2x - 30)

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

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

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

F(x) = (-7x + 1)(6x + 11)

* = multiplication

Bonne journée.