Evaluate \[x^4 + x^3y + x^2y^2 + xy^3 + y^4\]when $x = 5$ and $y = 4$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Evaluate \[x^4 + x^3y + x^2y^2 + xy^3 + y^4\]when $x = 5$ and $y = 4$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2101
Evaluate \[x^4 + x^3y + x^2y^2 + xy^3 + y^4\]when $x = 5$ and $y = 4$.
train