Answer:
(13mn² - 2nm² + 5n²) - (11mn² - 2n²) = 2mn² - 7n².
Explanation:
(13mn² - 2nm² + 5n²) - (11mn² - 2n²) can be simplified by removing the parentheses and distributing the negative sign to all the terms inside the second set of parentheses.
This gives:
13mn² - 2nm² + 5n² - 11mn² + 2n²
Simplifying further, we can combine like terms:
(13mn² - 11mn²) + (-2nm²) + (5n² + 2n²)
This gives:
2mn² - 7n²
Therefore, the simplified expression is 2mn² - 7n².