求满足下列各式的未知数x1/3(2x+1)^3-1/8=1

问题描述:

求满足下列各式的未知数x
1/3(2x+1)^3-1/8=1

1/4

1/3(2x+1)^3 = 9/8
(2x+1)^3 = 27/8
(2x+1) = 3/2
x = 1/4