SOLUTION: The sum of a number and its square is 56. Find the number. I believe its 7+49=56 but I don't know how to write it out. I must set up an Algebraic equation in order to get credit

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Question 249098: The sum of a number and its square is 56. Find the number. I believe its 7+49=56 but I don't know how to write it out. I must set up an Algebraic equation in order to get credit.
I appreciate your help!
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
The sum of a number and its square is 56. Find the number. I believe its 7+49=56 but I don't know how to write it out. I must set up an Algebraic equation in order to get credit.
I appreciate your help! 







x+8 = 0;    x-7 = 0
  x = -8      x = 7

So there are two solutions, not just the one you thought of.

(-8)^2 + (-8) = 64 - 8 = 56

as well as yours:

   (7)^2 + (7) = 49 + 7 = 56

Edwin
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