which value must be added to both side of the equation x^2+6x=5 to solve the equation by completing the square?

Question

 solve

Answer 1

x^2+6x=5

take 1/2 of 6 and square it

square 3

3^2=9

add 9 to both sides

x^2+6x+9=5+9

(x+3)^2=14

x+3=±√14

x=-3±√14