Given P(1)=2,P(2)=3,P(3)=4,P(4)=5P(1)=2, P(2)=3, P(3)=4, P(4)=5P(1)=2,P(2)=3,P(3)=4,P(4)=5, what is the degree of the minimal polynomial P(x)P(x)P(x)?
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4