SOLUTION: Complete the square and find the roots of the quadratic equation how do i solve this ???? x^2 + 16x = 0

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Question 139497: Complete the square and find the roots of the quadratic equation
how do i solve this ????
x^2 + 16x = 0
Answer by MathTutorer(13) About Me  (Show Source):
You can put this solution on YOUR website!
To complete the square you take the middle term "x" coefficient, half it, then square it like so.
x^2 + 16x ----> take the 16 and half it so you get 8 then square it so you get 64
So now the equation becomes x^2 + 16x + 64.
This is now a "perfect square" and if needs factorising it will look like this
(x+8)(x+8) = x^2+8x+8x+64 next step this equals
x^2+16x+64 which equals the "perfect square" we saw before.
Hope this answers your question.