Question

(3/5m + 5/7n)2 expand it
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Answer 1

Step-by-step explanation:

(3/5m + 5/7n)^2

(3/5m + 5/7n)(3/5m + 5/7n)

3/5m(3/5m+5/7n) + 5/7n(3/5m+5/7n)

9/25m^2 + 15/35mn + 15/35mn + 25/49n^2

9/25m^2 + 25/49n^2 + 30/70mn

hope it helps you..

Answer 2

Answer:

Let us take the LCM  and add  $\frac{1}{2} (\frac{3}{5m} +\frac{5}{7n} )$ .

$\frac{1}{2}* \frac{21n+25m}{35mn}$ =  $\frac{21n+25m}{70mn}$.