Question: Let A be the matrix -1(a) (6 points) Write out the full cofactor expansion of det A along the first row. (This should be a

Let A be the matrix -1(a) (6 points) Write out the full cofactor expansion of det A along the first row. (This should be a sum/difference of several 2 x 2 determinants multiplied by constants. For this part, do not evaluate the 2 x 2 determi nants.) (b) (4 points) Compute det A using the cofactor expansion you found in part (a). You must show all your steps (do not use technology). 4 5 (c) (10 points) Let B be the matrix 0 2 3 , and suppose that C is a 3 x 3 matrix such that det C = 10. Compute det(2ABC-1). You must justify your

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