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Mathematics
Problem
Add the polynomials
2
x
3
+
x
2
−
1
2x^3 + x^2 - 1
2
x
3
+
x
2
−
1
and
−
2
x
3
+
3
x
+
4
-2x^3 + 3x + 4
−
2
x
3
+
3
x
+
4
. State the degree of the resulting polynomial, giving a brief reason.
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