SOLUTION: The product of two consecutive integers is 9 less than 9 times their sum. Find the integers. I would like to know how to do this problem
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Question 751306: The product of two consecutive integers is 9 less than 9 times their sum. Find the integers. I would like to know how to do this problem Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The product of two consecutive integers is 9 less than 9 times their sum. Find the integers.
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1st: x
2nd: x+1
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Equation:
x(x+1) = 9(x + x+1)+9
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x^2 + x = 9(2x+1)+9
x^2 + x = 18x+18
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x^2 -17x -18 = 0
(x-18)(x+1) = 0
Positive solution:
x = 18
x+1 = 19
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Cheers,
Stan H.
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