Question

2m/5m+5n+3n/5m-5 решите пожалуйста ​

Answer 1

Ответ:

Объяснение:

2m/(5m+5n) + 3n/(5m-5n) = [2m(5m-5n) + 3n(5m+5n)] / [(5m+5n)(5m-5n)] =

= (10m^2 - 10mn + 15mn + 15n^2) / (25m^2 - 25n^2) =

= (10m^2 + 5mn + 15n^2)/(25m^2 - 25n^2) =

= (2m^2 + mn + 3n^2)/(5m^2 - 5n^2)