计算:(x-y)(x²+xy+y²)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 06:33:32
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计算:(x-y)(x²+xy+y²)
计算:(x-y)(x²+xy+y²)
计算:(x-y)(x²+xy+y²)
原式=x⑶+x²y+xy²-x²y-xy²-y⑶
=x⑶-y⑶
=a的三次方减b的三次方
(x-y)(x²+xy+y²)=x3-y3
(x-y)(x²+xy+y²)=x^3-y^3
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来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 06:33:32
计算:(x-y)(x²+xy+y²)
计算:(x-y)(x²+xy+y²)
计算:(x-y)(x²+xy+y²)
原式=x⑶+x²y+xy²-x²y-xy²-y⑶
=x⑶-y⑶
=a的三次方减b的三次方
(x-y)(x²+xy+y²)=x3-y3
(x-y)(x²+xy+y²)=x^3-y^3