Bonsoir, Factoriser les expressions suivantes : A= 4x + 8y B= 3x au carré + 12 x C= 3-81x

A = 4x + 8y
A = 4x + 4*2y
A = 4(x + 2y)

B = 3x² + 12x
B = x(3x + 12)

C = 3 - 81x
C = 3 - 3*27x
C = 3(1 - 27x)