Question

x is an odd number x square is also an odd number prove

Answer 1

for example take 3

here 3 is odd
three square is 9
and 9 is also a odd number

Answer 2

let x be an odd number
then x=2m+1
squaring on both sides,
xsquare=(2m plus. 1)
=4m square.+4m+ 1
=2(2msquare+2m)+1
=2k+1,where=2msquare +2m
hence square is also odd