Answer:

7 =(82)^2-(18)^2

8=102

2

=(100+2)

2

is of the form (a+b)

2

=a

2

+b

2

+2ab

where a=100,b=2

∴102

2

=(100+2)

2

=100

2

+2

2

+2×100×2

=10000+4+400=10404 this is helpful for u ohk

I think I don't know more

hope this two us helpful for u