已知：立方根0.756=0.9110,立方根7.56=1.963,立方根75.6=4.228,则立方根756=几,负立方根0.00756等于几

题目

已知：立方根0.756=0.9110,立方根7.56=1.963,立方根75.6=4.228,则立方根756=几,负立方根0.00756等于几

答案

³√10=立方根75.6/立方根7.56=4.228/1.963
立方根756=立方根75.6x³√10=4.228x4.228/1.963=9.106
负立方根0.00756=-立方根7.56/10=-1.963/10=-0.1963