If $x^2 + y = 4$ and $x^4 +y^2 = 10$, then what is $x^2y$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $x^2 + y = 4$ and $x^4 +y^2 = 10$, then what is $x^2y$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
If $x^2 + y = 4$ and $x^4 +y^2 = 10$, then what is $x^2y$?
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