The equation is
.
Solve the equation.
\
(Original equation)
Case(i):
\
(First equation)
(Subtract
from each side)
(Apply additive inverse property:
)
(Subtract:
)
Case(ii):
\
(Second equation)
(Subtract
from each side)
(Apply additive inverse property:
)
(Add:
)
Therefore, the solutions are
and
.
Check for solution for
-values.
Case(i):
(Original equation)
(Substitute
)
(Add:
)
(Substitute:
)
Case(ii): 
(Original equation)
(Substitute
)
(Subtract:
)
(Substitute:
)
Therefore, the solutions are
and
.
The solution set is
.