Question

add : 7m²+9n²+4 and 5n²-3m²​

Answer 1

Answer:

4m²+14n²+4

Step-by-step explanation:

7m²+9n²+4

-3m²+5n²

___________

4m²+14n²+4

Answer 2

Answer:

4m^2+14n^2 + 4

Step-by-step explanation:

Adding both the equation we get, (7m^2 + 9n^2 + 4) + (5n^2 - 3m^2) 7m^2-3m^2 + 9n^2 + 5n^2 + 4 4m^2+14n^2 + 4