Question 387915
What two numbers multiplied together give me 1440, 
and added together give me 13?
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Equations:
xy = 1440
x+y = 13
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y = 13-x
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Substitute for "y" and solve for "x":
x(13-x)-1440 = 0
-x^2+13x-1440 = 0
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x^2-13x+1440 = 0
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No Real Number solution.
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Cheers,
Stan H.