A function is defined as $f(x) = x^2 - 3x + 4$. What expression can be used to describe $f(2x)$? Express your answer in simplified form in terms of $x$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A function is defined as $f(x) = x^2 - 3x + 4$. What expression can be used to describe $f(2x)$? Express your answer in simplified form in terms of $x$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4x^2 - 6x + 4
A function is defined as $f(x) = x^2 - 3x + 4$. What expression can be used to describe $f(2x)$? Express your answer in simplified form in terms of $x$.
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