(-2/3X³y+4x²y²-1/2xy²)/(-xy/4) 急
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(-2/3X³y+4x²y²-1/2xy²)/(-xy/4) 急
(-2/3X³y+4x²y²-1/2xy²)/(-xy/4) 急
(-2/3X³y+4x²y²-1/2xy²)/(-xy/4) 急