Factorize :
100
x
+
y
2
-
81
a
+
b
2
Matching exercise
Match the items on the right to the items on the left.
Check
OK
Step 1
Step 2
Step 3
100
x
+
y
2
-
81
a
+
b
2
=
10
x
+
y
2
-
9
(
a
+
b
)
2
=
10
x
+
y
+
9
(
a
+
b
)
10
x
+
y
-
9
(
a
+
b
)
=
10
x
+
10
y
+
9
a
+
9
b
10
x
+
10
y
-
9
a
-
9
b