Aidez moi svp !! urgent

E= 2*1/3*1/3+9*1/3+4
=2*1/9+3+4
=2/9+7=65/9

bonsoir

pour x  = 1/3

E = 2 (1/3)² + 9 (1/3) + 4
E = 2 x 1/9 + 9 /3 +4
e = 2/9 + 9/3 + 4
E = 4/18 + 54/18 +72/18
E = 130/18 = 65/9

F = 4 x² + 4 x +1 - ( 2 x² - 6 x + x - 3)
F = 4 x² + 4 x +1 - 2 x² + 6 x  - x + 3
F = 2 x² + 9 x + 4

F = ( 2 x +1) ( 2 x +1 - x +3)
F = ( 2 x 1) ( x + 4)