Find the domain of the following.
`f(x)=(x^2+2x+1)/(x^2-8x+12)`

Explanation

`f(x)=x^2+2 x+1/x^2-8 x+12=x^2+2 x+1/(x-6)(x-2)`

The function `f` is defined for all real numbers except `x=6` and `x=2`.

Hence thé domain. of `f` is `R-{2,6}`