Question 814716: One number is 4 more than 3 times another. Their product is 20. Find the numbers
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! m = 3n + 4
nm = 20
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nm = 20
n(3n + 4) = 20
3nn + 4n = 20
3nn + 4n - 20 = 0
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the above quadratic equation is in standard form, with a=3, b=4, and c=-20
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to solve the quadratic equation, plug this:
3 4 -20
into this: https://sooeet.com/math/quadratic-equation-solver.php
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the roots of the quadratic are:
2
-3.33333333 = -(3 + 1/3)
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there are two solutions to the problem:
n = 2
m = 10
and:
n=-3.33333333
m=-5.99999999
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