HELPIs 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+4x^-3 + 4x6x - x^3 + 4x^2

Answer:[tex]\frac{x^2}{7}+1 \text{ is a polynomial;}\\-2x^3+2x+4 \text{ is a polynomial;}\\x^{-3}+4x \text{ is not a polynomial;}\\\text{and }6x-x^3+4x^2 \text{ is a polynomial.}[/tex]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.