If alpha beta and gamma RE zeroes of polynomial cube-2xsquare+x-r and alpha+beta =0.show that 2q=r

If alpha beta and gamma RE zeroes of polynomial cube-2xsquare+x-r and

1.	If alpha beta and gamma RE zeroes of polynomial cube-2xsquare+x-r and alpha+beta =0.show that 2q=r
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