SOLUTION: If I add the square of a number to the number itself, I get 30. What could the number be?

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Question 570273: If I add the square of a number to the number itself, I get 30. What could the number be?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
n^2+n=30
n^2+n-30=0
(n-5)(n+6)=0
n= 5 or -6