Answer: option 2
Explanation:
The expression .5x^2 - 2x is asking us to calculate the value of the expression when x is equal to 4.
To solve this expression, we first need to substitute the value of 4 for x.
.5x^2 - 2x
.5(4)^2 - 2(4)
.5(16) - 8
Therefore, the value of .5x^2 - 2x when x is equal to 4 is 8 - 8, which is equal to 0.