Answers

2014-03-02T15:30:01+05:30
Sum = -b/a
pdt = c/a
then substitute d values.....by trial and error method.

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2014-03-02T15:38:05+05:30
Let suppose roots are x and y then
x+y=-b/a
xy=c/a
where a,b,c are the coefficients of eq  axa x^{2} +bx+c=0 
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