1.

{x in R :(sqrt(6 + x - x^(2)))/(2 x + 5)ge (sqrt(6 + x - x^(2)))/(x - 4)}=

Answer»

[-2,3]
`(-infty, - 4 ]cup[(-5)/(2),-1]`
`[-2,-1]cup{3}`
`(-infty, -4]cup [-2,-1]`

Answer :C


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