Verified answer

Bonjour

a^2 - b^2 = (a - b)(a + b)

Factorise les expressions suivantes :

A=16x(2)-1

A = (4x)^2 - 1^2

A = (4x - 1)(4x + 1)

B=100-25x(2)

B = 10^2 - (5x)^2

B = (10 - 5x)(10 + 5x)

B = 5(2 - x) * 5(2 + x)

B = 25(2 - x)(2 + x)

Ou B = 25(4 - x^2)

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

B = 25(2 - x)(2 + x)

C=-9x(2)+4x

C = -9x * x + 4 * x

C = x(-9x + 4)

D=12x(2)+27

D = 3 * 4x^2 + 3 * 9

D = 3(4x^2 + 9)

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

E = (4x + 1)^2 - 3^2

E = (4x + 1 - 3)(4x + 1 + 3)

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

E = 2(2x - 1) * 4(x + 1)

E = 8(2x - 1)(x + 1)

F=(2x+2)(2)-(x+1)(2)

F = (2x + 2 - x - 1)(2x + 2 + x + 1)

F = (x + 1)(3x + 3)

F = (x + 1) * 3(x + 1)

F = 3(x + 1)^2