Let Vector "A" Cross With Vector "B" Equal To Ten,then Find (A+B) Cross With (A-B) ?

Answer 1

What is Tilili?

Answer 2

(A+B)x(A-B) = AxA + BxA - AxB - BxB
= BxA - AxB
= -2(AxB)

But, AxB is a vector, not a scalar. You have a glitch in there somewhere.