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Let `alpha,beta` be the roots of the equation `x^(2)-px+r=0 and alpha//2,2beta` be the roots of the equation `x^(2)-qx+r=0`, then the value of r is (1)`(2)/(9)(p-q)(2q-p)` (2) `(2)/(9)(q-p)(2p-q)` (3)`(2)/(9)(q-2p)(2q-p)` (4)`(2)/(9)(2p-q)(2q-p)`

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