Question

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

Answer 1

@Mertsj

Answer 2

@Zarkon

Answer 3

Do you know that only like terms can be added?

Answer 4

And you add like terms by adding the coefficients.

Answer 5

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

Answer 6

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

Answer 7

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

Answer 8

-3x^2?

Answer 9

So then its C?

Answer 10

@Mertsj ?????

Answer 11

So yes, C is correct.

Answer 12

thank you :)

Answer 13

yw