<PRE><B>Question 942649</B>
When the sum of 397 and four times a positive number is subtracted from the square of the number, the result is 128. Find the number
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Equation:
x^2 - (397+4x) = 128
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x^2 - 4x - 397 = 128
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x^2 - 4x - 525 = 0
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(x - 25)(x+21) = 0
Positive solution::
x = 25
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Cheers,
Stan H.
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