1.

Given that, for all real x, the expression(x^(2)-2x+4)/(x^(2)+2x+4)lies between (1)/(3) and 3. The values which the expansion (9*3^(2x) +6*3^(x)+4)/(9*3^(2x)-6*3^(x)+4) lies are

Answer»

`(1)/(3) and 3 `
`-2 and 0`
`-1 and 1`
0 and 2

Answer :a


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