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Question 18 (4 points) Select all statements that are correct: two vectors are equal provided both their magnitude and direction are e (1,0, -1) is a unit vector V2 when adding two unit vectors the result will be a unit vector (1, 2, -1) x (2, -1, 0) = (2,1, -1) for vectors A and B we have that A x B is a scalar quantity