SOLUTION: A number added to its square is 56. Find the number. Answer in this form: 6 or 7

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Question 312535: A number added to its square is 56. Find the number. Answer in this form: 6 or 7
Answer by Edwin McCravy(20065) About Me  (Show Source):
You can put this solution on YOUR website!

x%5E2+%2B+x+=+56
x%5E2+%2B+x+-+56+=+0
%28x%2B8%29%28x-7%29=0

matrix%282%2C2%2C%0D%0A%0D%0Ax%2B8=0%2Cx-7=0%2C%0D%0Ax=-8%2C+x=7%29

-8 or 7

Edwin