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数学
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1000分之a的三次方根等于-19.98,则-1000a的三次方根的值为————————
人气:282 ℃ 时间:2019-10-19 22:00:53
解答
楼上的不够详细:
-19.98=³√(a/1000)=³√a/10
³√a=-199.8
³√(-1000a)=-10³√a=-10x(-199.8)=1998
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