If $x$ is an integer, what is the smallest value of the expression $x^2 - 6x +13$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $x$ is an integer, what is the smallest value of the expression $x^2 - 6x +13$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4
If $x$ is an integer, what is the smallest value of the expression $x^2 - 6x +13$?
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