(-xy2)∧2(x+2x∧2y)=
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(-xy2)∧2(x+2x∧2y)=(-xy2)∧2(x+2x∧2y)=(-xy2)∧2(x+2x∧2y)=原式=x²y^4(x+2x²y)=x³y^4+2x^4y^5
(-xy2)∧2(x+2x∧2y)=
(-xy2)∧2(x+2x∧2y)=
(-xy2)∧2(x+2x∧2y)=
原式=x²y^4(x+2x²y)=x³y^4+2x^4y^5
(-xy2)∧2(x+2x∧2y)=
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