SOLUTION: How do do you solve X^2-6x+9=100?
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Question 650909: How do do you solve X^2-6x+9=100?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
You realize that
and re-write the equation as
Since and ,
that leads you to the two solutions.
Either --> -->
or --> -->
Not all equations will be that close to the solution.
If they had given you
or the equivalent equation
you would have to realize that is almost
Then, adding 9 to both sides of the equal sign in ,
you would get to
The adding of a number to get a perfect square is what math teachers call "completing the square."
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