Factorize :
16
-
x
2
-
2
x
y
-
y
2
Matching exercise
Match the items on the right to the items on the left.
Check
OK
Step 1
Step 2
Step 3
Step 4
16
-
x
2
-
2
x
y
-
y
2
=
16
-
x
2
+
2
x
y
+
y
2
=
4
2
-
(
x
+
y
)
2
=
4
+
(
x
+
y
)
4
-
(
x
+
y
)
=
(
4
+
x
+
y
)
(
4
-
x
-
y
)