Bonjour je voudrai de l’aide

Bonjour

A = x² - 16

A = (x)² - (4)²

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

B =  1 - y²

B = (- y + 1) (y + 1)

C = 100x² - 9

D = (10x)² - (3)²

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

D = 36 - 81x²

D = 6² - (9x)²

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

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

E = 4π² - 25

E = (2π)² - (5)²

E = (2π - 5) (2π + 5)

F = (r + 3)² - 16

F = (r + 3 - 4) (r + 3 + 4)

F = (r - 1) (r + 7)

G = (2x + 1)² - 25

G = (2x + 1) - (5)²

G = (2x + 1 - 5) (2x + 1 + 5)

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

H = (3i + 7)² - (i + 5)²

je ne sais pas

Bonjour,

Factoriser:

A= x²-4²= (x-4)(x+4)

B= (1-y)(1+y)= -(y-1)(y+1)

C= 100x²-3²= (10x-3)(10x+3)

D= 6²-81z²= (6-9z)(6+9z)= - 9(3z-2)(3z+2) ***-9z+6= -3(2z-2) et 9z+6= 3(3z+2)

E= 4π²- 5²= (4π²-5)(4π²+5)

F= (t+3)²-4²= (t+3-4)(t+3+4)= (t-1)(t+7)

G= (2x+1)²-5²= (2x+1-5)(2x+1+5)= (2x-4)(2x+6)= 4(x-2)(x+3)  *** 2*2(x-2)(x+3)

H= (3i+7)²-(i+5)²= (3i+7-i-5)(3i+7+i+5)= (2i+2)(4i+12)= 8(i+1)(i+3) ***2*4(i+1)(i+3)