SOLUTION: To solve quadratic equations using a variety of methods including completing the square and the quadratic formula, please give an example using either completing the square or the

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Question 39684: To solve quadratic equations using a variety of methods including completing the square and the quadratic formula, please give an example using either completing the square or the quadratic formula and explain each step as if you were teaching someone who had never used the method before.
Thank you

Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Use this as an example:
0+=+x%5E2+-+6x+%2B+9 original
-9+=+x%5E2+-+6x only group the x's
-9+%2B+9+=+%28x+-+3%29%5E2 set it up as x minus half of the -6 squared
and add -3 squared to the other side
0+=+%28x+-+3%29%5E2
This means:
0+=+%28x+-+3%29%28x+-+3%29
Zero times any number is .... zero!! Set each set equal to zero; since you have a double root, you only need to set one section to zero.
x+-+3+=+0
x+=+3 Your only answer is three.