PLEASE HELP. I'LL GIVE BRAINLIEST. Find the missing value to complete the square. So what is the value of the question mark that would make the equation true.
x² + 14x + ?

The answer is 16.

Since the 8x is positive, the equation  must have y as a positive number.

Let's see this!

An easy way to complete the square if you have the constants for x2 and

But not the non-variable number is to divide the x constant, and then square it.

Example:

The last number must be 16. Let's check it.

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong

(-5,-28)

i graphed to on desmos.