The vectors below are adjacent sides of a parallelogram with area square root of 195 square units. Determine the value(s) of k? Express all answers as a reduced fraction. a→=[2,3,−1]b→=[k,−1,2]

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.