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Let px^(2)+qx+r=0 be a quadratic equatio...

Let `px^(2)+qx+r=0` be a quadratic equation `(p,q,r in R)` such that its roots are `alpha and beta`. If `p+q+rlt0,p-q+rlt0 and r gt0`, then the value of `[alpha]+[beta]` is (where[x] denotes the greatest integer x)________.

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