Question: Find the determinant by row reduction to echelon form. 1 -1 85 0 1 66 -1 0-77 4 4 39 0 - Use row

Find the determinant by row reduction to echelon form. 1 -1 85 0 1 66 -1 0-77 4 4 39 0 - Use row operations to reduce the matrix to echelon form. 1 - 1 8 5 0 1 6 6 - 1 0-77 44 39 0

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