x五次方y³-x³y五次方 4x³y+4x²y²+xy³

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x五次方y³-x³y五次方 4x³y+4x²y²+xy³
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x五次方y³-x³y五次方 4x³y+4x²y²+xy³
x五次方y³-x³y五次方 4x³y+4x²y²+xy³

x五次方y³-x³y五次方 4x³y+4x²y²+xy³

x五次方y³-x³y五次方
=x³y³(x²-y²)
=x³y³(x+y)(x-y)

4x³y+4x²y²+xy³
=xy(4x²+4xy+y²)
=xy(2x+y)²