Question

What number must be added to both sides of the equation to complete the square? x^2-14x=7

Answer 1

x^2 - 14x - 7 = 0 
x^2 - 14x + 49 - 49 -7= 0 
(x^2 - 14x + 49) - 49 - 7= 0 
(x - 7)^2 - 56 = 0 
i achieved 49 by: 
first divide the 14 by 2 and then square it. 
14/2= 7 
7^2 = 49