Final answer:
The value of V when x = -2 is calculated by multiplying x by 10. So, V = -2 * 10 which equals -20. This is an integer value and does not require the use of a fraction.
Step-by-step explanation:
The student's question appears to be related to the computation of a function V at a specific value of x, where x = -2. However, there is a mix-up because the information provided references the quadratic formula and different constants that are not directly related to the question posed. For a function V that multiplies a variable x by 10, we simply calculate V by substituting the value of x into the expression.
If V = x * 10, then for x = -2:
V = -2 * 10
V = -20
This value is a simple integer and does not require a fraction or any other constants for its expression.