Find the Value of the Determinant $$\left| \begin{array} { l l } 8 & 5 \\7 & 7\end{array} \right|$$

question 259

Multiple Choice

Find the value of the determinant.
- $$\left| \begin{array} { l l } 8 & 5 \\7 & 7\end{array} \right|$$

• A) 91
• B) -21
• C) 21
• D) -9

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