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计算5xy²-{2x²-[3xy²-(xy²-2x²y)]÷(1/2xy)}
题目详情
计算5xy²-{2x²-[3xy²-(xy²-2x²y)]÷(1/2xy)}
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答案和解析
5xy²-{2x²-[3xy²-(xy²-2x²y)]÷(1/2xy)}
=5xy²-{2x²-[3xy²-xy²+2x²y]÷(1/2xy)}
=5xy²-{2x²-[2xy²+2x²y]÷(1/2xy)}
=5xy²-{2x²-4y-4x}
=5xy²-2x²+4y+4x
=5xy²-{2x²-[3xy²-xy²+2x²y]÷(1/2xy)}
=5xy²-{2x²-[2xy²+2x²y]÷(1/2xy)}
=5xy²-{2x²-4y-4x}
=5xy²-2x²+4y+4x
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