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