OpenStudy (anonymous):

The sum of two polynomials is (2x^2 + 2x + 9). One of the addends is (5x^2 + 8). What is the other? A) (7x^2 + 2x + 17) B) (3x^2 - 2x - 1) C) (-3x^2 + 2x + 1) D) None of the above

4 years ago
OpenStudy (anonymous):

@Mertsj

4 years ago
OpenStudy (anonymous):

@Zarkon

4 years ago
OpenStudy (mertsj):

Do you know that only like terms can be added?

4 years ago
OpenStudy (mertsj):

And you add like terms by adding the coefficients.

4 years ago
OpenStudy (anonymous):

What are coefficients....and why do I need that for this question?

4 years ago
OpenStudy (mertsj):

So if we start with: 5x^2+8 and add ( ) I end up with 2x^2+2x+9

4 years ago
OpenStudy (mertsj):

So 5x^2+ what is 2x^2?????

4 years ago
OpenStudy (anonymous):

-3x^2?

4 years ago
OpenStudy (anonymous):

So then its C?

4 years ago
OpenStudy (anonymous):

@Mertsj ?????

4 years ago
OpenStudy (mertsj):

So yes, C is correct.

4 years ago
OpenStudy (anonymous):

thank you :)

4 years ago
OpenStudy (mertsj):

yw

4 years ago