化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy
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化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷-1/4xy,其中x=-2,y=1/5注意：是-1/4xy化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷-1/
化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy
化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5
注意：是-1/4xy
化简求值:[4(xy-1)²-(xy+2)(2-xy)]÷ -1/4 xy,其中x=-2,y=1/5注意：是-1/4xy
化简结果是：-20xy+32代入得40