A
A
:
B
≠
0
B \neq 0
:
A
=
B
Q
+
R
A = BQ + R
Q
Q
:
R
R
:
3
X
4
-
X
3
+
7
X
2
-
2
X
+
5
=
(
X
3
+
3
X
+
7
)
(
3
X
-
1
)
+
(
-
2
X
2
-
20
X
+
12
)
{3X^4 -X^3 +7X^2- 2X + 5} = \left(X^3+3X+7\right) \left(3X-1\right) + \left(-2X^2-20X+12\right)