Question

Which of the following shows that polynomials are closed under addition when two polynomials 4x2 − 8x − 7 and −5x + 16 are added?

4x2 − 13x + 9 may or may not be a polynomial

4x2 + 13x − 23 may or may not be a polynomial

4x2 − 13x + 9 will be a polynomial

4x2 + 13x − 23 will be a polynomial

Answer 1

I'm pretty sure it's {c} 4x2+13x-23 will be a polynomial, because the polynomial discriminate is 100.

Answer 2

thank you(:

Answer 3

No problem