SOLUTION: When the sum of 618 and three times a positive number is subtracted from the square of the number, the result is 136. Find the number.

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Question 704897: When the sum of 618 and three times a positive number is subtracted from the square of the number, the result is 136. Find the number.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
n is a number;
618+3n,
When -(618+3n)+n^=136.
n^2-3n-618=136
n^2-3n-618-136=0
n^2-3n-754=0
n=%283%2Bsqrt%289-4%2A%28-754%29%29%29%2F2 or n=%283-sqrt%289-4%2A%28-754%29%29%29%2F2, only one of them would work.