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