Find the factor (a2+b2)xy+ab(x2+y2)
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{(a+b)2-2ab}xy+{(x-y)2+2xy}ab
=(a+b)2 xy+(x-y)2 ab+2abxy-2abxy
=xy(a+b)2+ab(x-y)2 (answer)
=(a+b)2 xy+(x-y)2 ab+2abxy-2abxy
=xy(a+b)2+ab(x-y)2 (answer)
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