Find the determinant of .

Answer and explanation

Correct answer: B.

  1. Step 1: For a matrix the determinant is .
  2. Step 2: .
Answer
.
Why not the others: : The products were added. : The subtraction was reversed. : Only one product was taken.

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Find the determinant of [-2 -1; -1… | Thanawiya Amma (Egypt)