If `vecaxxvecb=veccxxvecd` and `vecaxxvecc=vecbxxvecd` then show that `veca-vecd` is parallel to `vecb-vecc`

If vecaxxvecb = veccxxvecd and vecaxxvecc = vecbxxvecd , show that (veca-vecd) is parallel to (vecb-vecc) .

If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd show that (veca-vecd) is parallel to (vecb-vecc) .

If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd show that (veca-vecd) is parallel to (vecb-vecc) . It is given that veca!=vecd and vecb!=vecc .

If vecaxxvecb=veccxxvecdand vecaxxvecc=vecbxxvecd , show that veca-vecd is parallel to vecb-vecc , provided vecanevecd and vecbnevecc

If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd show that veca-vecd and vecb-vecc are parallel.

STATEMENT-1 : If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd , then veca-vecd is perpendicular to vecb-vecc . And STATEMENT-2 : If vecP and vecQ are perpendicular then vecP.vecQ=0 .

STATEMENT-1 : If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd , then veca-vecd is perpendicular to vecb-vecc . And STATEMENT-2 : If vecP and vecQ are perpendicular then vecP.vecQ=0 .

Assertion: If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd the (veca-vecd) is perpendicular to (vecb-vecc) ., Reason : If vecp is perpendicular to vecq then vecp.vecq=0 (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Assertion: If vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxvecd the (veca-vecd) is perpendicular to (vecb-vecc) ., Reason : If vecp is perpendicular to vecq then vecp.vecq=0 (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

If veca,vecb,vecc,vecd are four distinct vectors satisfying the conditions vecaxxvecb=veccxxvecd and vecaxxvecc=vecbxxecd then prove that veca.vecb+vecc.vecd!=veca.vecc+vecb.vecd