Which of the following shows that polynomials are closed

Last updated: 7/19/2022

Which of the following shows that polynomials are closed under addition when two polynomials 4x + 6 and 2x²-8x-4 are added? (1 point) a. 2x²-4x+2 will be a polynomial b. 2x²-4x+2 may or may not be a polynomial c. 2x²-12x-10 will be a polynomial d. 2x²-12x-10 may or may not be a polynomial