# won't evaluate answers given by solve()

I am solving an equation and then trying to plug in the answers it gives to show that the answers are correct, but sage will not evaluate the answers i plug in.

```
solve(x^3+1==0,x)
```

yields

```
[x == 1/2*I*sqrt(3)*(-1)^(1/3) - 1/2*(-1)^(1/3),
x == -1/2*I*sqrt(3)*(-1)^(1/3) - 1/2*(-1)^(1/3),
x == (-1)^(1/3)]
```

if you then put into sage `(1/2*I*sqrt(3)*(-1)^(1/3) - 1/2*(-1)^(1/3))^3+1`

the result it gives is `(1/2*I*sqrt(3)*(-1)^(1/3) - 1/2*(-1)^(1/3))^3 + 1`

. it's like it doesn't know what to do with it's own answers.

What result would you expect ?