Question

if n1 and n2 are 2 two odd prime no. such that n1 is greter than n2 then write the nature of n1square - n1square

Answer 1

here clearly n1 = 2a +1
n2 = 2p +1

we have (2a+1)^2 - (2p+1)^2
= 4a^2. + 1+ 4a -4p^2-1-4p

=2(2a^2 - 2p^2+ 2a -2p)

=2m even no.
hope it helps