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If vec(a) = 7vec(i) -2vec(j) + 3vec(k), ...

If `vec(a) = 7vec(i) -2vec(j) + 3vec(k), vec(b)= 2vec(i) + 8vec(k), vec(c ) =vec(i) + vec(j) + vec(k)`, then verify that `vec(a) xx (vec(b) + vec(c ))= (vec(a) xx vec(b)) + (vec(a) xx vec(c ))` (or) prove that cross product is distributive over addition

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