Factorize :
a
3
x
+
a
2
(
x
-
y
)
-
a
y
+
z
-
z
Matching exercise
Match the items on the right to the items on the left.
Check
OK
Step 1
Step 2
Step 3
Step 4
a
3
x
+
a
2
(
x
-
y
)
-
a
y
+
z
-
z
=
a
3
x
+
a
2
x
-
a
2
y
-
a
y
-
a
z
-
z
=
a
3
x
+
a
2
x
-
a
2
y
+
a
y
-
a
z
+
z
=
a
2
x
a
+
1
-
a
y
a
+
1
-
z
a
+
1
=
a
+
1
a
2
x
-
a
y
-
z