We are given the function

To complete the missing values of the table, we simply replace the value of x for each empty space of the table.
IN this case, we are missing the value of y when x=2. So, we calculate it as follows

So the value of y when x=2 is 49.
Now we calculate it for x=0. We get

THen the value of y when x=0 is 1.
Finally we want to check the value of y when x=-2. We have that

Recall that given a non zero number a and a number b, we have that

IN this case we have a=7 and b=2, so we ge t

This means that the missing value, when x=-2, is 49