已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x^3y^5

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已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x^3y^5已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x^3y^5已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x

已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x^3y^5
已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x^3y^5

已知x-y=1,xy=2,求x^5y^3-2x^4y^4+x^3y^5
x^5y³-2x^4y^4+x³y^5
=x³y³(x²-2xy+y²)
=(xy)³(x-y)²
=2³×1²
=8×1
=8

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