1.

If both the rootsof the quadratic equation x^(2) + 2 (a +2) + x + 9a - 1 = 0 are negative, then a lies in the set

Answer»

`[1, infty]`
`(1//9,1] CUP [4, infty)`
`(-2,4) cup (6, infty)`
`phi`

Answer :B


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