SOLUTION: The sum of a number and its square is 30. Find the​ number(s).

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Question 1078194: The sum of a number and its square is 30. Find the​ number(s).
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of a number and its square is 30. Find the​ number(s).
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Let the number be "x"::
Equation:
x + x^2 = 30
x^2 + x - 30 = 0
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Factor::
(x-6)(x+5) = 0
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x = 6 or x = -5
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Cheers,
Stan H.
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Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + x = 30
z^2 + x - 30 = 0
(x-5)*(x+6) = 0
x = -6, x = 5