Asked by #1
                 Find the vector, not with determinants, but by using properties of cross products. 
k × (i − 8j)
            
        k × (i − 8j)
Answers
                    Answered by
            oobleck
            
    using the associative property, this is just
k×i - k×8j
Now recall that
k×i = j
k×j = -i
...
    
k×i - k×8j
Now recall that
k×i = j
k×j = -i
...
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