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If cos^4theta+alpha and sin^4theta+alpha...

If `cos^4theta+alpha` and `sin^4theta+alpha` are the roots of the equation `x^2+2b x+b=0` and `cos^2theta+beta,sin^2theta+beta` are the roots of the equation `x^2+4x+2=0,` then values of `b` are a) `2` b) `-1` c) `-2` d) `1`

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