The value of the determinant |2 3; 4 5| is:
The value of the determinant |2 3; 4 5| is:
- A. 2
- B. -2
- C. 7
- D. -7
Answer: B) -2
Explanation: For a 2×2 matrix |a b; c d|, determinant = ad − bc. So (2)(5) − (3)(4) = 10 − 12 = −2.
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