Question

compute (3m-2n)³. please answer it fast​

Answer 1

Answer:

3m−2n)

3

We know that (x−y)

3

=x

3

−y

3

−3xy(x−y)

Here x=3m and y=2n we get

∴(3m−2n)

3

=(3m)

3

−(2n)

3

−3(3m)(2n)(3m−2n)

=27m

3

−8n

3

−12mn(3m−2n)

=27m

3

−8n

3

−36m

2

+24mn

2

=27m

3

−36m

2

n+24mn

2

−36n

2