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If the domain of the function f(x) = x^2...

If the domain of the function `f(x) = x^2 - 6x + 7` is `(- oo,oo)`, then the range of the function is

A

`(-oo,oo)`

B

`[-2,oo)`

C

`[2,3]`

D

`(-oo,-2)`

Text Solution

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The correct Answer is:
B
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