what should be subtracted from the sum of x square Y + Y square x + 3 and minus 3 x square Y + y cube + xy square to get x square Y + x y square - 2
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Sum of x²y+y²x+3 and -3x²y+y³+xy²
= -2x²y +2xy²+y³+3
let the subtracted number be z
2xy²-2x²y +y³+3 - z = x²y +xy²-2
z = 2xy²-2x²y +y³+3 -x²y - xy² +2
z = xy² -3x²y +y³ +5
Therefore xy²-3x²y +y³+5 has to be subtracted
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