SOLUTION: A square of a number plus a number is 20. What is the number?

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Question 816862: A square of a number plus a number is 20. What is the number?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+x=20
x^2+x-20=0
(x+5)*( x-4)=0