Answer:
Explanation:
Given expression
(2x⁴ - 8x²y² - y⁴) - (-6x⁴ - 3x²y² + 5y⁴)
Expand the parenthesis
2x⁴ - 8x²y² - y⁴ + 6x⁴ + 3x²y² - 5y⁴
Move like terms together
2x⁴ + 6x⁴ - y⁴ - 5y⁴ - 8x²y² + 3x²y²
Combine like terms
Hope this helps!! :)
Please let me know if you have any questions