计算:7xy+xy³+4+6x-五分之二xy³-5xy-3=?
1个回答
7xy+xy³+4+6x-五分之二xy³-5xy-3
=7xy-5xy+xy³-五分之二xy³+6x+4-3
=2xy+五分之三xy³+6x+1
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7xy+xy^3+4+6x-五分之二xy^3-5xy-3等于?
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