If Q = (9−2−74) ( 9 − 2 − 7 4 ) , then |Q| ..

Question 1 Report

If Q = $(\begin{matrix} 9 & - 2 \\ - 7 & 4 \end{matrix})$ , then |Q| is

-50

-22

Answer Details

If Q = $(\begin{matrix} 9 & - 2 \\ - 7 & 4 \end{matrix})$ , then |Q| is
= 9 x 4 - (-2) x (-7)
= 36 - 14
= 22

If Q = (9−2−74) ( 9 − 2 − 7 4 ) , then |Q| is