To complete the square, first rewrite the equation as x^2 - 8x = 1. What value would then be added to both sides of the equation to complete the square?

Answer 1

Take half of the coefficient of x. The coefficient of x is 8, and half of 8 is 4. Now square 4. You get 16. Therefore, you will add 16 to both sides of the equation to complete the square.

Answer 2

You would add 16 to both sides. You take half of -8 and square it.