Question

Please solve the above question correctly while showing detailed working.​

Answer 1

- 4x³ - 2xy - 2y²

Explanation:

3x³ + 5xy - 8y² - (7x³ + 7xy - 6y²) ← distribute parenthesis by - 1

= 3x³ + 5xy - 8y² - 7x³ - 7xy + 6y² ← collect like terms

= - 4x³ - 2xy - 2y²