Which of the following shows that polynomials are closed under addition when two polynomials 4x2 − 8x − 7 and −5x + 16 are added?
a. 4x^2 - 13x + 9 may or may not be a polynomial
b. 4x^2 + 13x -23 may or may not be a polynomial
c. 4x^2 -13x + 9 will be a polynomial
d. 4x^2 + 13x - 23 will be a polynomial

When two polynomials and are added, then the result is .  Thus, Option (A) is the correct option.

Let us determine the addition of the given polynomials.

Now, check all the options and see which option is perfectly matched with our final expression.

Thus, the polynomial is closed under addition when two polynomials and are added.

Thus,

Option (A) is the correct option.

To know more about the polynomials, please refer to the link:

link

i think this could be a possible answer (1 / 84) -1

good luck! : d

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x