Find the difference of the polynomials below. Write your answer in descending order.

(x3 + 2x2 + 5x + 7) - (3x3 - 2.5x2 + 5x + 5)

2 answers

assuming all you need is confirmation of the answer you obtained through your hard work,

-2x^3 + 4.5x^2 + 2
3-8