Question: In Problems 19 28, tell whether the expression is a polynomial. If it is, give its degree. If it is not, state why not.

In Problems 19 – 28, tell whether the expression is a polynomial. If it is, give its degree. If it is not, state why not.3x3 + 2x - 1 x2 + x +1

3x3 + 2x - 1 x2 + x +1

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