Question

(8r^2-7r-9) +(-r^2+r)=
Expanded polynomial in standard form?

Answer 1

7r^2-6r-9

Explanation:

8r^2-7r-9-r^2+r

(8r^2-r^2)+(-7r+r)-9

bring to standard form

7r^2-6r-9

Answer 2

7r² - 6r + 9

Explanation:

Simply combine like terms to find our final polynomial:

8r² - 7r - 9 - r² + r

7r² - 6r + 9