Hi

completing the square

   x^2+2x   = 2 

recommend thinking what would 'come in handy' to get (x+1)^2 on left side...

and adding that number 1 to both sides of the equation.



   (x+1)^2 = 3 

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
 

Take 1/2 of the coefficient of , square it,

and add it to both sides





The left side is now a perfect square



Now take the square root of both sides



 answer

and



 answer

------------------

These 2 answers are the roots. You can check 

your work this way:





so,





so,





so,



Multiplying this out,







OK 

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