(a-b+c)²(b-a+c)³等于什么?
人气:473 ℃ 时间:2020-04-06 21:32:46
解答
答:
(a-b+c)²(b-a+c)³
=[c-(b-a)]²(c+b-a)²(c+b-a)
=[c²-(b-a)²)](c+b-a)
=(c²-b²+2ab-a²)(c+b-a)给我个为什么啊!简单点的都行!我怀疑你提供的题目有错误,应该是求(a-b+c)²(b-a-c)³吧?就是最后一个c前面的应该是减号(a-b+c)²(b-a-c)³[-(b-a-c)]²(b-a-c)³=(b-a-c)²(b-a-c)³=(b-a-c)^(2+3)=(b-a-c)^5就是(b-a-c)的5次方。。对额、谢谢哈。。不客气,谢谢采纳支持,祝你学习进步
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