Respuesta :

sqdancefan
All but the second selection are polynomials.

A square root is the same as a (1/2) power. The variables in a polynomial must all have powers that are positive integers.

Answer:

5x²-√x

Step-by-step explanation:

1)6 +p

2) x-1

3) 8x-z3


4) 5x²-√x   --> has a root so it is not a polynomial


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