Question

(5m²n + 8mn - 11mn²) + (7n²m - 9mn + 13nm²)​

Answer 1

Answer:

18 m^2 n - mn - 4 mn^ 2

Step-by-step explanation:

Step 1. Make the variables same

mn ^ 2 = n^2 m

Step 2. Remove the brackets by multiple plus with the brackets

Solve according to the signs of similar variables