If `alpha, beta and gamma` are three consecutive terms of a non-constant G.P. such that the
Channel: Doubtnut
Date: 2020-04-12

If `alpha, beta and gamma` are three consecutive terms of a non-constant G.P. such that the equations `alphax^(2) + 2beta x + gamma = 0 and x^(2) + x - 1= 0` have a common root, then `alpha (beta + gamma)` is equal to