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Answer:
degree 3
Step-by-step explanation:
Note that
(- 3)³ + 4 = - 27 + 4 = - 23
(- 2)³ + 4 = - 8 + 4 = - 4
0³ + 4 = 0 + 4 = 4
1³ + 4 = 1 + 4 = 5
2³ + 4 = 8 + 4 = 12
3³ + 4 = 27 + 4 = 31
Then
f(x) = x³ + 4 ← a polynomial of degree 3