1
.
(
3x^2
-
5x
)
(
2x^3
+
4x^2
-
x
+
2
)
=
____________________
+
____________________
-
____________________
+
____________________
-
____________________
2
.
(
6a^3
+
5a^2
+
8a
-
3
)
+
(
a^3
-
12a^2
-
4a
+
2
)
=
____________________
-
____________________
+
____________________
-
____________________
3
.
(
2mn
-
5mn^2
+
8m^2n
)
-
(
10mn
+
6m^2n
-
3mn^2
+
mn
)
=
____________________
(
-
____________________
-
____________________
+
____________________
)
4
.
7m^2n^3
/
-
3mn
=
-
____________________
/
____________________
____________________
5
.
(
mn
+
n^2
-
2n^3
)
-
(
5m^2
+
8mn
-
6n^3
)
+
(
3mn
-
6m^2
+
4n^3
)
=
-
____________________
(
____________________
+
____________________
-
____________________
)
