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Question

If p,q are the roots of the equation x2+px+q=0 then 
  1. p=1,q=2
  2. p=0,q=1
  3. p=2,q=0
  4. p=2,q=1


Solution

The correct option is A p=1,q=2
x2+px+q=0
p,q are roots 
so,
p+q=p   &  pq=qp=1,q=2

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