Answers

2015-12-15T21:57:39+05:30
x^2 + y^2 = 40  (x,y>>zeros of equation)
(x+y)^2-2xy=40 ......................... eq 1
now
sum=x+y=-b/a=8
product=xy=c/a=k
put in eq1
64-40=2k
=> k=12
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2015-12-15T22:19:07+05:30
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