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Question 525341: one number is 5 less than 2 times another. The product of the number is 63. Find the numbers
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! one number is 5 less than 2 times another. The product of the number is 63. Find the numbers
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Equations:
y = 2x+5
xy = 63
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Substitute for "y" and solve for "x":
x(2x+5) = 63
2x^2+5x-63 = 0
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Factor:
(2x-9)(x+7) = 0
x = 9/2 or x = -7
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Solve for "y":
If x = 9/2
y = 2x+5
y = 9+5 = 14
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If x = -7
y = 2x+5
y = 2*-7+5
y = -9
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solutions: (9/2,14) and (-7,-9)
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Cheers,
Stan H.
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