Answer:
5l² + 25ln
Step-by-step explanation:
Step 1: Write expression
4l(10n - 3m + 2l) - 3l(l - 4m + 5n)
Step 2: Distribute
40ln - 12lm + 8l² - 3l² + 12lm - 15ln
Step 3: Combine like terms
