Question

Show that a cube of any positive integer is in the form 4m 4m+1 4m+3​

Answer 1

just consider n as some positive interger.which is equal to 4n .now cube the both side .you will get 64 n cube .now split it as 4×16ncube.and consider m=16 cube .so 4mcube.so according to this you can solve other two.just try it.