Calcule les expressions suivantes ✨

x = 2/3
A = x +2
2/3 +2 = 2/3 +6/3 = 8/3 
B = 2x -3
2 X 2/3 +2
4/3 +2 = 4/3 +6/3 = 10/3
C = 4(1 -x)
4(1-2/3)
4 ( 3/3 -2/3)
4(1/3) = 4/3

D = x² -4x +1
2/3² -4 X 2/3 +1
4/9 -8/3 +1
4/9 -24/9 +9/9 = -11/9