Question

Which expression represents the determinant of

Answer 1

C det(A) = (–6)(–2) – (–4)(–7)

Explanation:

EDGE 2020

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Answer 2

det(A) = (-6)(-2) - (-4)(-7)

Explanation:

The determinat of the following matrix:

`\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right]`

Is given by: Determinant a*d - b*c

In this case, a=-6, b=-7, c=-4 and d=-2.

Therefore the determinant is: (-6)(-2) - (-7)(-4).

Therefore, the correct option is the third one:

det(A) = (-6)(-2) - (-4)(-7)