(1/2x方+xy-1.5y方)/(x方-y方)
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(1/2x方+xy-1.5y方)/(x方-y方)
![(1/2x方+xy-1.5y方)/(x方-y方)](/uploads/image/z/16592162-50-2.jpg?t=%281%2F2x%E6%96%B9%2Bxy-1.5y%E6%96%B9%29%2F%28x%E6%96%B9-y%E6%96%B9%29)
原式=(x²y²-4-2x²y²+4)÷xy
=-x²y²÷xy
=-xy
=-10×(-1/25)
=2/5
=-x²y²÷xy
=-xy
=-10×(-1/25)
=2/5
x方-xy+1/4y方
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