Question

(m + 2n)(1 + 3m + 4n) - 6n (m + n)​

Answer 1

Answer:

3 m² + 14 n²+ 4 m n + 2 n

Step-by-step explanation:

m + 3m² + 4 m n + 2 n+ 6 m n + 8 n² - 6 m n - 6n²

3 m² + 14 n²+ 4 m n + 2 n