Factorize :
a
2
-
b
2
-
a
-
b
Matching exercise
Match the items on the right to the items on the left.
Check
OK
Step 1
Step 2
Step 3
a
2
-
b
2
-
a
-
b
=
a
2
-
b
2
-
(
a
+
b
)
=
(
a
-
b
)
(
a
+
b
)
(
a
+
b
)
=
(
a
+
b
)
(
a
-
b
)
-
1