SOLUTION: The difference between a square of a positive number and 5 times the number is 266.

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Question 228594: The difference between a square of a positive number and 5 times the number is 266.
Answer by chibisan(131) About Me  (Show Source):
You can put this solution on YOUR website!
the number be x
x^2-5x=266
x^2-5x-266=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%285+%2B-+sqrt%28+1089+%29%29%2F%282%29+%29
x+=+%285+%2B-+33%29%2F%282%29%29+
x= 5+33/2 or x=5-33/2
x=19(ans) or x=-14(reject since the number is positive)