Find the domain of the function $\frac{x+1}{x^2+6x+8}$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find the domain of the function $\frac{x+1}{x^2+6x+8}$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
(-\infty,-4)\cup(-4, -2)\cup(-2,\infty)
Find the domain of the function $\frac{x+1}{x^2+6x+8}$.
train