Question 250870
    x^3   + 3xy  - 8y^2
- (6x^3   - 8xy  - y^2)(the (-)neg changes (2) equation to (-6x^3 - 8xy – y^2)
  -5x^3 -5xy -9y^2
(Answer:  -5x^3 - 5xy - 9y^2