已知2x-2y=1/8,xy=2.求2x∨4y³-x³y∨4的值同上..
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已知2x-2y=1/8,xy=2.求2x∨4y³-x³y∨4的值同上..
已知2x-2y=1/8,xy=2.求2x∨4y³-x³y∨4的值
同上..
已知2x-2y=1/8,xy=2.求2x∨4y³-x³y∨4的值同上..
∵2x-2y=1/8
∴x-y=1/16
xy=2
2x∨4y³-x³y∨4
=x³y³(x-y)
=(xy)³(x-y)
=2³×1/16
=8×1/16
=1/2