the square of every integer can be expressed as in the form of 4k or 4K + 1 and not as8k+1. For examples square of 10 which is 100 can be represented only as 8*12+4.(in terms of 8)( which is not 8k+1)

“and not as 8k+1. For examples square of 10 which is 100 can be represented only as 8*12+4.(in terms of 8)( which is not 8k+1)” this part which i wrote before is wrong