bonsoir aide moi svpl no 9 urgencess

Bonsoir,

A = 1 x a + a x a
A = a + a²
A = a² + a

B = a x a x a - 0 x b
B = a³

C = 6 x a x a - a
C = 6a² - a

D = 2 x a x 3 x a
D = 2a x 3a
D = 6a²

E = a x a x b x 3
E = a² x 3b
E = 3a²b

F = 1 x a x a x b x 0
F = 0

G = a x 2 x b x a x b
G = 2ab x ab
G = 2a²b²

H = (a + b) (a + b)
H = a² + ab + ab + b²
H = a² + b² + 2ab

A = 1 x a  + a x a = a + a²

B = a x a x a - 0 x b = a³

C = 6 x a x a - a = 6a² - a

D = 2 x a x 3 x a = 6a²

E = a x a x b x 3 = 3a²b

F = 1 x a x a x b x 0 = a²b x 0 = 0

G = a x 2 x b x a x b = 2a²b²

H = (a + b)(a + b) = (a + b)²