因为
27(x-1)^3+8=0
所以
27(x-1)^3=-8,
(x-1)^3=-8/27,
x-1=-2/3,
x=1/3
27×(X-1)×(X-1)×(X-1)+8=0
27×(X-1)×(X-1)×(X-1)=-8
(X-1)×(X-1)×(X-1)=-8/27
X-1=-立方根8/27
X-1=-2/3
X=1/3
(x-1)的立方=8/27
x-1=2/3
x=5/3
27(x-1)^3=-8,
(x-1)^3=-8/27,
x-1=-2/3,
x=1/3
3分之一(过程没法打)