Verified answer

Bonsoire!

A=(2X-5)(2X-5-3X+1)

 =(2X-5)(-x-4)

 =-(2X-5)(x+4)

B=(3X-2)(1-4X-1)

 =(3X-2)(-4X)

 =-4X(3X-2)

C=(X+3)(5-3X-X-3)

 =(x+3)(2-4X)

 =2(X+3)(1-2X)

D=4²(x-4)²-(2X+4)²

  =conf a²-b²

=⊂4(x-4)-(2X+4)⊃⊂4(x-4)+2X+4⊃

=(4X-16-2X-4)(4X-16+2X+4)

=.....

Verified answer

Bonsoir,

Factoriser les expressions :

A = (2x - 5)^2 - (2x - 5)(3x - 1)

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

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

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

B = (3x - 2)(1 - 4x - 1)

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

B = -4x(3x - 2)

C = (x + 3)(5 - 3x) - (x + 3)^2

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

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

C = 2(x + 3)(-2x + 1)

D = 16(x - 4)^2 - (2x + 4)^2

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

D = [4(x - 4) - 2x - 4][4(x - 4) + 2x + 4]

D = (4x - 16 - 2x - 4)(4x - 16 + 2x + 4)

D = (2x - 20)(6x - 12)

D = 2(x - 10) * 6(x - 2)

D = 12(x - 10)(x - 2)