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题型:填空题 题类:常考题 难易度:普通
= = .①
= = .②
= = = ﹣1.③
以上化简的步骤叫做分母有理化.
还可以用以下方法化简:
= = = = ﹣1.④
① ;② (a≥0);③ (m,n同号且n≠0);④ ;⑤ .
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