7 4 ____ +____ m+n m-n
Matematika
adian3
Pertanyaan
7 4
____ +____
m+n m-n
____ +____
m+n m-n
1 Jawaban
-
1. Jawaban missdiyun
7/m+n + 4/m-n
= 7(m-n) + 4(m+n)
-------------------------
(m+n) (m-n)
= 7m - 7n + 4m + 4n
----------------------------
(m+n) (m-n)
= 11m - 3n
------------------------------
m^2 - mn + mn - n^2
= 11m - 3n
------------------------------
m^2 - n^2