Question

Упростите выражение:

Answer 1

(√(mn)+n)/(√m+√n)-(n-m)/(√m++√n)=
=(√n(√m+√n)/(√m+√n)-(√n+√m)(√n-√m)/(√m+√n)=√n-(√n-√m)=
=√n-√n+√m=√m.