Let α and β be the roots of the quadratic equation px2+qx+r=0, where αβ=99. If p,q and r (taken in that order) are in arithmetic progression, then (α+β) is equal to
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Let α and β be the roots of the quadratic equation px2+qx+r=0, where αβ=99. If p,q and r (taken in that order) are in arithmetic progression, then (α+β) is equal to