Charlie subtracts two polynomials, 2x^2−2x^2

, and says that the difference proves that polynomials are not closed under subtraction. Kate argues that the difference does in fact show that polynomials are closed under subtraction. Who is correct?

(1 point)
Responses

*Charlie
*Kate

Kate is correct. The difference of the two polynomials, 2x^2 - 2x^2, equals zero. This means that subtraction of polynomials results in another polynomial, showing that polynomials are closed under subtraction.