factoriser les expressions. A=3x+3 B=9t+9 C=4_4y D=1,2+1,2 merci ďavance​

bonsoir,

3 x + 3 = 3 ( x + 1 )

9 t + 9 = 9 ( t + 1)

4 - 4 y = 4 ( 1 - y)

1.2 + 1 .2  = 1.2 ( 1 + 1 ) = 1.2 ( 2 )

A=3(x+1)

B=9(t+1)

C=4(1_y)

D=1,2(1+1)