(-1/2y+2x)(3/2x-2/3y+1)计算

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答案和解析

(-1/2y+2x)(3/2x-2/3y+1)
=-3/4xy+3x²+1/3y²-4/3xy-1/2y+2x
=3x²+1/3y²+2x-1/2y-25/12xy

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