x2 -y2 +8xy2 -3y2 and 15xy2 2x2+y2-x2?
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Answer:
(x2 -y2 +8xy2 -3y2)+( 15xy2 2x2+y2-x2?)
Explanation:
x2 -y2 +8xy2 -3y2+ 15xy2 2x2+y2-x2
(8xy2-3y2 + 15xy2 +2x2) - (x2 +x2 -y2 +y2 )
11y2+17yx2-x+y4+y2
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