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Hello,
- LearningToCode August 16, 2015let the 2 nos be a and b so the given is
a*b = (say)8 -- equation1
a+b=6. -- equation 2
You can keep 8 and 6 and x and y too.
so a = 6-b => substitute this in equation 1
=> (6-b)*b = 8
=>6b-b^2 = 8
=> b^2 - 6b + 8 = 0
Now this becomes a quadratic equation and will always be in such problems. solve get the value of b and by substituting that into either of equations above of ur choice will get the value of a.
So in this case
(b-4)(b-2)=0 so the o/p is 4 and 2
Edit:::::
In short, in such problems try to reduce the number of variables to one and try to represent others in term of only one variable. Then that variable will help you to find out rest of the values.