SOLUTION: if the square of a positive integer is added to three times the integer, the result is 208. Find the integer

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Question 755447: if the square of a positive integer is added to three times the integer, the result is 208. Find the integer
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + 3x = 208
x^2 + 3x - 208 = 0
(x + 16)(x - 13) = 0

x is positive ----> x = 13