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4 & 9
For any two unknown numbers, we can say
nm = 36
n + m = 13
Hence
n = 13 - m
Substitute
(13 - m) m = 36
Multiply out
13m - m^2 = 36
m^2 - 13m + 36 = 0
factor
( m -9)( m - 4) = 0
Hence
m = 4 & m = 9
NB THis is good for any two unknown numbers, to be found against any constant.
lenpollock
Wiki User
∙ 13y ago9 x 4 = 36
9 + 4 = 13
The two numbers are therefore 9 and 4.
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