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Mathematics
Problem
What is the simplified form of the expression
(
6
x
4
+
4
x
3
−
2
x
2
+
5
)
−
(
3
x
4
−
2
x
3
+
x
+
4
)
(6x^4 + 4x^3 - 2x^2 + 5) - (3x^4 - 2x^3 + x + 4)
(
6
x
4
+
4
x
3
−
2
x
2
+
5
)
−
(
3
x
4
−
2
x
3
+
x
+
4
)
? A.
3
x
4
+
2
x
3
−
2
x
2
+
x
+
1
3x^4 + 2x^3 - 2x^2 + x + 1
3
x
4
+
2
x
3
−
2
x
2
+
x
+
1
B.
3
x
4
+
2
x
3
−
2
x
2
−
x
+
9
3x^4 + 2x^3 - 2x^2 - x + 9
3
x
4
+
2
x
3
−
2
x
2
−
x
+
9
C.
3
x
4
+
6
x
3
−
2
x
2
+
x
+
1
3x^4 + 6x^3 - 2x^2 + x + 1
3
x
4
+
6
x
3
−
2
x
2
+
x
+
1
D.
3
x
4
+
6
x
3
−
2
x
2
−
x
+
1
3x^4 + 6x^3 - 2x^2 - x + 1
3
x
4
+
6
x
3
−
2
x
2
−
x
+
1
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