已知2x-y=1/3,xy=2,求2x^4y^3-x^3y^4的值
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已知2x-y=1/3,xy=2,求2x^4y^3-x^3y^4的值
已知2x-y=1/3,xy=2,求2x^4y^3-x^3y^4的值
已知2x-y=1/3,xy=2,求2x^4y^3-x^3y^4的值
2x^4y^3-x^3y^4
=x³y³(2x-y)
=(xy)³(2x-y)
=2³×(1/3)
=8/3