Question

What should be added to n? + 5mn + m2 to obtain 6m2 +15 mn​

Answer 1

Answer:

i think 3

hope it helps you

Answer 2

Answer:

(n² + 5mn + m²) + n = 6m² +15 mn

n = (6m² + 15mn) - (n² + 5mn - m²)

6m² + 15mn - n² -5 mn - m²

5m² + 10 mn - n²