is each expression a polynomial?

drag and drop each expression to the correct box.

is a polynomial

is not a polynomial

x^2
—— + 1
7

-2x^3+2x+4

x^-3 + 4x

6x - x^3 + 4x^2

Step-by-step explanation:

A polynomial is the sum or difference of one or more monomials.  A monomial is a constant, a variable, or the product of constants and variables.  It does not include negative exponents.

The first choice is a polynomial because the only terms are variables with positive exponents and constants.

The second choice is a polynomial because the only terms are variables with positive exponents and constants.

The third choice is not a polynomial because the first term has a negative exponent.

The fourth choice is a polynomial because the only terms are variables with positive exponents and constants.

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step-by-step explanation:

it is b)

hope this : )

step-by-step explanation: