Question

Which expressions are polynomials?

Select each correct answer.

x – 1
5x²-√x
6+p
8x-z³

Answer 1

5x²-√x

Explanation:

1)6 +p

2) x-1

3) 8x-z3

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

Answer 2

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.