P
r
o
v
e
t
h
a
t
:
(
a
+
b
)
3
+
(
b
+
c
)
3
+
(
c
+
a
)
3
-
3
(
a
+
b
)
(
b
+
c
)
(
c
+
a
)
=
2
(
a
3
+
b
3
+
c
3
-
3
a
b
c
)
Match the items on the right to the items on the left.
Check
OK
STEP1
STEP2
STEP3
STEP4
STEP5
