Aidez moi :( Developper: A=4 (x+a+b) B= 2x (2ax+1) C=3(cx-2)² D= (5a-3x) (5a+3x) E= (bx +2) (2a-4x) Factoriser: F= ax² +3x G= 4a²y + ay H= a²x² +2ax+1 I= 9- x²y

bonjour

a = 4 x + 4 a + 4 b

b = 4 ax² + 2 x

c = 3 ( cx² - 4 cx + 4) = 3 cx² - 12 cx + 12

d = 25 a² - 9 x²

e = 2 abx - 4 bx² + 4 a - 8 x

f = x ( ax + 3)
g = ay ( 4 a + 1)

h = (ax + 1)²

i = ( 3 - xy) ( 3 +xy)
j = x² - a²