(
____________________
+
5
)
(
x^2
+
7
)
=
x^4
+
____________________
+
____________________
(
x
+
2x^2
)
(
x
+
3x^2
)
=
____________________
+
____________________
+
____________________
(
____________________
+
4
)
(
x^2
+
4
)
=
x^4
+
____________________
+
____________________
(
-
4x
+
4x^2
)
(
-
4x
-
____________________
)
=
____________________
-
____________________
-
4x^4
(
x^2
+
4x
)
^3
=
x^6
+
____________________
+
____________________
+
____________________
