Question 22
Matrices and DeterminantsIf |4 x; 5 3| = 32, find the value of x
- A.4
- B.2
- C.−2
- D.−4
Show the answer and explanation
Answer: D (−4)
Explanation
The determinant is 4 × 3 − 5x = 12 − 5x. 12 − 5x = 32 gives x = −4.
If |4 x; 5 3| = 32, find the value of x
Answer: D (−4)
The determinant is 4 × 3 − 5x = 12 − 5x. 12 − 5x = 32 gives x = −4.