factorize 4x^3-13x-12
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Answer:
Let's perform the long division
a
a
a
a
x
−
4
∣
a
a
a
a
x
3
+
0
x
2
−
13
x
−
12
a
a
a
a
∣
x
2
+
4
x
+
3
a
a
a
a
a
a
a
a
a
a
a
a
a
a
x
3
−
4
x
2
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
0
+
4
x
2
−
13
x
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
+
4
x
2
−
16
x
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
+
0
+
3
x
−
12
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
+
3
x
−
12
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
+
0
−
0
Therefore,
x
3
−
13
x
−
12
x
−
4
=
x
2
+
4
x
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