The equation is
.
.
Find the cube roots of
, write
in polar form.

.

.
If
, then
.

.
Polar form of
is
.
Write an expression for cube roots.
\
.
Let
successively to find the cube roots.
Substitute
in
.




.
Substitute
in
.





.
Substitute
in
.





.
The cube roots of
are
,
and
.
Thus, the solutions to the equation are
,
and
.
,
and
.