IT IS VECTOR TRIPLE PRODUCT EXPANSION
SIMPLY SOLVE IT BY EXPANDING DEL
AND APPLY IT TO FIRST VECTOR AND TAKING SECOND(VECTOR) CONSTANT AND THEN VICE VERSA.
U SHOULD ALSO ASSUME GENERAL DIFFIRENT FORMS OF VECTORS IN (I,J,K).
U SHOULD ALSO CHECK THE SCALAR AND VECTOR FORMS ,i.e,"X" &...