Question 37: Parse the polynomial \(\begin{aligned} & x^{2}-4 x^{2} y^{2}+y^{2}+2 xy\end{aligned}\) into multiplier:
\(\begin{aligned} & x^{2}-4 x^{2} y^{2}+y^{2}+2 xy \\ =& x^{2}+2 x y+y^ {2}-4 x^{2} y^{2} \\ =&(x+y)^{2}-(2 xy)^{2} \\ =&(x+y-2 xy)( x+y+2 xy) \end{aligned}\)
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