1.

If alpha" and "beta, alpha" and "gamma" and "alpha" and "delta are the roots of the equations ax^(2)+2bx+c=0, 2bx^(2)+cx+a=0" and "cx^(2)+ax+2b=0 respectively, where a,b and c are positive real numbers, thenalpha+alpha^(2)=

Answer»

`-1`
`0`
`1`
`ABC`

ANSWER :A


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