Question

show that the square of any positive integers can't be in the form of 5m+2 or 5m+3 where m is a whole number​

Answer 1

==> a = 5( 5q² + 8q + 3 ) + 1 . °• a = 5m + 1 . [ Where m = 5q² + 8q + 3 ] . → Therefore, square of any positive integer in cannot be of the form 5m + 2 or 5m + 3