SOLUTION: The square of a number is 15 more than 2 times the number.
Algebra.Com
Question 261075: The square of a number is 15 more than 2 times the number.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The square of a number is 15 more than 2 times the number.
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Let the number be "x".
Equation:
x^2 = 2x + 15
x^2 -2x - 15 = 0
Factor:
(x-5)(x+3) = 0
x = 5 or x = -3
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Cheers,
Stan H.
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