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Question 811996: one integer is 9 more than another. their product is 252. find the integers
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! i = j + 9
ij = 252
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(j + 9)j = 252
jj + 9j - 252 = 0
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jj + 9j - 252 = 0
the above quadratic equation is in standard form, with a=1, b=9, and c=-252
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plug this:
1 9 -252
into this: https://sooeet.com/math/quadratic-equation-solver.php
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the roots (solutions) of the above quadratic equation (jj + 9j - 252 = 0) are:
12
-21
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answer, the two integers are:
j = 12
i = 21
or
j = -21
i = -12
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