Question

Which expression is a polynomial? a. 9x^7 y^-3z b. 4x^3 - 2x^2 + 5x - 6+ 1/x c. - 13 d. 13x ^-2

Answer 1

Answer: B.

Step-by-step explanation:

Polynomials cannot have negative exponenets because x^-3 can be written as 1/x^3 and terms containing fractional exponents are not considered polynomials