Factorize :
x
4
+
4
Matching exercise
Match the items on the right to the items on the left.
Check
OK
Step 1
Step 2
Step 3
Step 4
Step 5
x
4
+
4
=
x
4
+
4
x
2
+
4
-
4
x
2
=
x
2
2
+
2
×
x
2
×
2
+
2
2
-
4
x
2
=
x
2
+
2
2
-
2
x
2
=
x
2
+
2
+
2
x
x
2
+
2
-
2
x
=
x
2
+
2
x
+
2
x
2
-
2
x
+
2