Question

(m-n)+(m+n)=_____
please answer me ​

Answer 1

Answer:

m² + n²

Step-by-step explanation:

= m ( m+n) - n ( m+n )

= m² + mn - mn +n²

= m² + n²

Note:

- mn + mn = 0

Answer 2

m+n=m×n i think so the answer is