If $y = 8 - 5x +4x^2$, what is the value of $y$ when $x=-2$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $y = 8 - 5x +4x^2$, what is the value of $y$ when $x=-2$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
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If $y = 8 - 5x +4x^2$, what is the value of $y$ when $x=-2$?
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