Answer:
-6
Step-by-step explanation:
Plug in x = 3 in the equation: 3(3 - 4) + 2(3) - (3)^2
Now simplify with order of operations:
3(3 - 4) = -3
2(3) = 6
-(3)^2 = -9
-3 + 6 - 9 = -6
