What is the determinant of this matrix? $$\left[ {\begin{array} {cc} -1 & 4 \\ 7 & 8 \end{array} } \right]$$

Practice: Matrices - Determinant (2x2) - Matrix to Answer

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Skills such as Calculate the determinant of a 2 by 2 matrix, Calculate the determinant of a 3 by 3 matrix using cofactor expansion, and Calculate the inverse of a 2 by 2 matrix that require this topic.
Units such as Matrix Operations - Transpose, Determinants that require this topic.

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Determinant (2x2) - Matrix to Answer

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Determinant (2x2) - Matrix to Answer

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