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(3y+2)(y-4)-3(y-2)(y-3)计算
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(3y+2)(y-4)-3(y-2)(y-3)计算
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答案和解析
解
(3y+2)(y-4)-3(y-2)(y-3)
=3y²-12y+2y-8-3(y²-5y+6)
=3y²-10y-8-3y²+15y-18
=5y-26
(3y+2)(y-4)-3(y-2)(y-3)
=3y²-12y+2y-8-3(y²-5y+6)
=3y²-10y-8-3y²+15y-18
=5y-26
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