1.

If x is real then the range of (x^(2)-2x+9)/(x^(2)+2x+9) is

Answer»

`(-OO, 0] UU (1, oo)`
`[(1)/(2), 2]`
`(-oo, -(2)/(9)]uu(1, oo)`
`(-oo, -6]uu[-2, oo)`

ANSWER :B


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