How do you find the determinant of ((-2, 1), (3, 8))? Precalculus Matrix Algebra Determinant of a Square Matrix 1 Answer Ratnaker Mehta Jul 19, 2018 -19. Explanation: "The Reqd. Detrmnt."=|(-2,1),(3,8)|, =(-2)(8)-(3)(1), =-16-3, -19. Answer link Related questions What is the determinant of an inverse matrix? What is the determinant of a matrix used for? What is the determinant of a matrix to a power? What is meant by the determinant of a matrix? How do I find the determinant of a 2xx2 matrix? How do I find the determinant of a 3xx3 matrix? How do I find the determinant of of a 4xx4 matrix? How do I find the determinant of of a 5xx5 matrix? Does every matrix have a determinant? What is the cofactor expansion method to finding the determinant? See all questions in Determinant of a Square Matrix Impact of this question 1668 views around the world You can reuse this answer Creative Commons License