已知:三次根号下0.756=0.9110,三次根号下7.56=1.963,三次根号下75.6=4.228,则三次根号下756=?负的三次根号下0.00756=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 00:23:59
![已知:三次根号下0.756=0.9110,三次根号下7.56=1.963,三次根号下75.6=4.228,则三次根号下756=?负的三次根号下0.00756=?](/uploads/image/z/263584-64-4.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%9A%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B7%E4%B8%8B0.756%3D0.9110%2C%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B7%E4%B8%8B7.56%3D1.963%2C%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B7%E4%B8%8B75.6%3D4.228%2C%E5%88%99%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B7%E4%B8%8B756%3D%3F%E8%B4%9F%E7%9A%84%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B7%E4%B8%8B0.00756%3D%3F)
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已知:三次根号下0.756=0.9110,三次根号下7.56=1.963,三次根号下75.6=4.228,则三次根号下756=?负的三次根号下0.00756=?
已知:三次根号下0.756=0.9110,三次根号下7.56=1.963,三次根号下75.6=4.228,则三次根号下756=?
负的三次根号下0.00756=?
已知:三次根号下0.756=0.9110,三次根号下7.56=1.963,三次根号下75.6=4.228,则三次根号下756=?负的三次根号下0.00756=?
其实三次方根是有规律的,每扩大1000倍或缩小1000倍与原数差1位数
∴三次方根756=10*三次方根0.756=9.110
-三次方根0.00756=-1/10三次方根7.56=-0.1963
三次根号下756=三次根号下0.756*1000=9.11,负的三次根号下0.00756=-0.1963
9.11
三次根号下0.756=0.9110
三次根号下1000*0.756=三次根号下1000* (三次根号下0.756)
=10*三次根号下0.756
=9.11