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? A. Charlie B. Kate
B. Kate
Kate is correct. The difference of 2x^2 - 2x^2 is 0, and this is still a polynomial. Therefore, polynomials are closed under subtraction.