Equations: solve by completing the square
x^2 -10x =56 take 1/2 the 'b' coefficient (-10) square it and add it to both sides of the equation
x^2 -10x + 25 = 56 +25 now you can do this:
(x-5)^2 = 81
Now x-5 = +- 9
x = 14 or -4
so both answer will count? or I need to put one of them?
Both answers are correct...... substitute them into the original equation to see !