Question

СРОЧНО,,,,,,,,...........

Answer 1

m(m+n)–4mn+n(m+n) m(m–n)+n(m
(-------------------------------):(-------------------
m+n (m–n)(m+n)

+n)–2mn m^2+mn–4mn+mn+n^2
-------------) = ---------------------------------- :
m+n

m^2–mn+mn+n^2–2mn
: ----------------------------------- =
(m–n)(m+n)

m^2–2mn+n^2 m^2–2mn+n^2
= ---------------------- : ---------------------- =
m+n (m–n)(m+n)

(m–n)^2•(m–n)(m+n)
= ------------------------------ = m–n
(m+n)•(m–n)^2