Question

Please show all work all so use horizontal method or the box method whichever one you are more comfortable with.

(20 points)
Show all work

Answer 1

12x^3 - 11x^2 + 9x + 18

Explanation:

12x^3 - 20x^2 + 24x + 9x^2 - 15x + 18

combine like terms

12x^3 - 11x^2 + 9x + 18