If ^i×((^a−^j)×^i)+^j×((^a−^k)×^j)+^k×((^a−^i)×^k)=→0 an – InterviewSolution

1.	If ^i×((^a−^j)×^i)+^j×((^a−^k)×^j)+^k×((^a−^i)×^k)=→0 and →a=x^i+y^j+z^k, then 8(x3−xy+zx) is equal to
Answer» If $^i \times ((^a -^j) \times^i) +^j \times ((^a -^k) \times^j) +^k \times ((^a -^i) \times^k) = \to 0$ and $\to a = x^i + y^j + z^k,$ then $8 (x^{3} - x y + z x)$ is equal to

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