SOLUTION: If 6 is added to a number and than subtracted from the same number, the product of the sum and the difference is 189 . What is the number?

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Question 174954: If 6 is added to a number and than subtracted from the same number, the product of the sum and the difference is 189 . What is the number?
Answer by stanbon(48575) About Me  (Show Source):
You can put this solution on YOUR website!
If 6 is added to a number and than subtracted from the same number, the product of the sum and the difference is 189
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Let the number be "x".
EQUATION:
(x+6)(x-6) = 189
x^2 -36 = 189
x^2 = 225
x = 15 or x = -15
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Cheers,
Stan H.