Find the determinant of the matrix with rows (6 4) and (2 2).
Answer and explanation
Correct answer: C. 4
- Step 1: For a 2 by 2 matrix, determinant = ad - bc. Step 2. = 6 x 2 - 4 x 2 = 4. Answer: 4. Why not the others: 20: That adds the two products instead of subtracting. -4: That subtracts in the wrong order, giving the opposite sign. 12: That is only one of the two products.
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