Exercice 1 et 2 svp!! Vite!!

ex 1
P=5x(a+9)
=5xa+5x9
=5a+45

A=3x(10+b)
=3x10+3xb
=30+3b

T=(11+c)x7
=7x11+7xc
=77+7c

L=2x(a-4)
=2xa+4x2
=2a+8

ex 1
P = 5 x ( a + 9 )
P = 5 x a + 5 x 9
P = 5a + 45

A = 3 ( 10 + b )
A = 3 x 10 + 3 x b
A = 30 + 3b

T = ( 11 + c ) x 7
T = 11 x 7 + c x 7
T = 77 + 7c

L = 2 x ( a - 4 )
L = 2 x a - 2 x 4
L = 2a - 8

ex 2
A = 6 x b + 6 x d
A = 6 x ( b + d)
A = 6b + 6d

B = 3 x 4 + g x 4
B = 4 ( 3 + g )
B = 12 + 4g

C = p x 8 - p x a
C = p x ( 8 - a )
C = 8p - pa

D = s x 7 - 4 x 7
D = 7s - 28
D = 7 x ( s - 4 )