If $f(x)$ is a polynomial of degree 4, and $g(x)$ is a polynomial of degree 2, then what is the degree of polynomial $f(x) - g(x)$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $f(x)$ is a polynomial of degree 4, and $g(x)$ is a polynomial of degree 2, then what is the degree of polynomial $f(x) - g(x)$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4
If $f(x)$ is a polynomial of degree 4, and $g(x)$ is a polynomial of degree 2, then what is the degree of polynomial $f(x) - g(x)$?
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