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If x 1 and x 2 are the roots of the equation X 2 +px-q=0 and x 3 and x 4 are the roots of the equation X 2 +px+r=0 then (x 1- x 3 ) (x 1- x 4 ) (x 2- x 3 ) (x 2- x 4 )
The answer is (q+r).(q-p) apply the relation between the roots and multiply the above expression And then u easily got the answer
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