Question

Find the sum or difference of the polynomials. Write your answer in descending

order.(3x2 – 3x+6) - (5x2 + 2x + 9)

Answer 1

-2x^2-5x-3

Just distribute the negative, then combine like terms.

Answer 2

-2x^2-5x-3

Explanation:

(3x^2 – 3x+6) - (5x^2 + 2x + 9)

Distribute the minus sign

(3x^2 – 3x+6) - 5x^2 - 2x - 9

Combine like terms

3x^2 -5x^2 -3x-2x +6-9

-2x^2-5x-3