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Range of the function f(x)=(x^(2)+x+2)/(...

Range of the function `f(x)=(x^(2)+x+2)/(x^(2)+x+1),x inR` is :

A

1: R

B

2: `R-(1)`

C

3: `R-(-3,-2)`

D

4: `R-(-3,2)`

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The correct Answer is:
B
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