Question

Expand (3m + 5n)² give ans​

Answer 1

Answer:

(2m−5)

3

=(2m)

3

−(5)

3

−3(2m)

2

(5)+3(2m)(5)

2

=8m

3

−125−60m

2

+150m

=8m

3

−60m

2

+150m−125

but what is 5n