Question

Expand (2m- n)2 that 2 is square​

Answer 1

Answer:

4m^2-8m+4

Step-by-step explanation:

expand using (a-b)^2 formula

hope it's right and helpful :)

Answer 2

Answer:

given,

= (2m-2)2

=4m-4

4=4m

4/4=m

0=m

m=0