Question

(7m - 8n)+ (7m + 8n) ​

Answer 1

Answer:

14m

Step-by-step explanation:

If u open the brackets, u shall notice that 8n gets cancelled using the plus and minus signs and the 7m gets added to give us 14m as the answer

Answer 2

Answer:

answer is 14m^2-64n^2

hope it will help you