The value of (xa+b)2(xb+c)2(xc+a)2(xa.xb.xc)4 is
Prove that :
(i) (xaxb)a2+ab+b2×(xbxc)b2+ab+c2×(xcxa)c2+ca+a2=1
(ii) (xaxb)c×(xbxc)a×(xcxa)b=1