3(x-1)³-81=0 立方根运算

问题描述:

3(x-1)³-81=0 立方根运算

3(x-1)³-81=0
(x-1)³=27
x-1=3
x=4

3(x-1)³-81=0
3(x-1)³=81
(x-1)³=27
x-1=3
x=3+1
x=4