7. 6. 8 5. 3. 3 6. 9. x
Added by Jeffrey S.
Step 1
First, we need to find the determinant of the given matrix: $$ \begin{vmatrix} 7 & 6 & 8 \\ 5 & 3 & 3 \\ 6 & 9 & x \end{vmatrix} $$ We can use the cofactor expansion method to find the determinant: $$ \begin{aligned} \det(A) &= 7 \cdot \begin{vmatrix} 3 & 3 \\ 9 Show more…
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