SOLUTION: Please help me solve: The square of a number minus 2 times the number is 14. What the number?

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Question 743364: Please help me solve: The square of a number minus 2 times the number is 14. What the number?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-2x=14
x^2-2x+4=14+4
(x-2)^2=18
square root
x-2= +/-3sqrt(2)
x=2+/- 3sqrt(2)