Given that $3x^2-2(x^2+4)=42$, what is the value of $x^4$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Given that $3x^2-2(x^2+4)=42$, what is the value of $x^4$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2500
Given that $3x^2-2(x^2+4)=42$, what is the value of $x^4$?
train