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Help with problem and pick if it is odd or even

Help With Problem And Pick If It Is Odd Or Even class=

Answer :

Since

[tex]f(x)=-x^4+x^3+2x+x+1[/tex]

even degree function, it will have an even number of real zeros, and, since it has a degree of 4, there will be 4, 2 or 0 real zeroes

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