a^2
+
5a
+
6
=
(
____________________
+
____________________
)
(
____________________
+
3
)
b^2
+
2b
-
8
=
(
____________________
-
____________________
)
(
____________________
+
____________________
)
c^2
-
9c
+
20
=
(
____________________
-
4
)
(
____________________
-
____________________
)
d^2
-
10d
+
9
=
(
____________________
-
____________________
)
(
____________________
-
9
)
e^2
-
3e
-
10
=
(
____________________
+
____________________
)
(
____________________
-
____________________
)
f^2
-
9f
+
18
=
(
____________________
-
3
)
(
____________________
-
____________________
)
g^2
+
11g
+
10
=
(
____________________
+
____________________
)
(
____________________
+
10
)
h^2
-
h
-
20
=
(
____________________
+
____________________
)
(
____________________
-
____________________
)
