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Let alpha,beta be the roots of the equat...

Let `alpha,beta` be the roots of the equation `x^2-p x+r=0a n dalpha//2,2beta` be the roots of the equation `x^2-q x+r=0.` Then the value of `r` is `2/9(p-q)(2q-p)` b. `2/9(q-p)(2q-p)` c. `2/9(q-2p)(2q-p)` d. `2/9(2p-q)(2q-p)`

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