the sum of the ages of two freinds is 20 years.four years the product of their ages was 48
the sum of the ages of two freinds is 20 years.four years the product of their ages was 48
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x+y = 20 ; x = 20-y
4 years ago..
(x-4)(y-4) = 48
(20-y-4)(y-4) = 48
(16-y)(y-4) = 48
16y-64-y2+4y = 48
-y2+20y-64 = 48
y2-20y+112=0
This equation has complex roots.Hence this equation cannot exist!
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