Fill in the blank with a number to make the expression a perfect square.
V2+ 14 + ?

Step-by-step explanation:

When the coefficient of the square term (w2) is 1, this is very easy.

Divide the coefficient of w by 2 and then square it.

In this case, you first get -14 / 2 = -7, and then (-7)2 = 49.

Or to be even easier, you can ignore the sign of the w term, because you're going to end up with the same positive number when you square a negative value or a positive value.