Question

Guys, plz do this fast...tomorrow is my exam...........Help me.....​

Answer 1

Answer:

=(m+n/7)^2 (m +n/7)(m- n/7)

using (a+b) (a-b)

=(m+n/7)^2(m^2 -n^2/49)

now you have only to simplify

Answer 2

Step-by-step explanation:

(m+n/7)^3 (m+n/7). (m+n/7 )^2(m+n/7) [m+n/7]. [m+n/7]^2 [m^2-(n/7)^2]. [m+n/7]^2 [ m^2-n^2/49]