Question

Find the system determinant of the given matrix. -30 -6 6 30

Answer 1

Option A: -30

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Answer 2

- 864

Explanation:

In the case of a 2 × 2 matrix the determinant may be defined as:

|A| =
`\left[\begin{array}{cc}a&b\\c&d\\\end{array}\right]`= ad-bc

Given in the question a matrix

`\left[\begin{array}{cc}-30&-6\\6&30\\\end{array}\right]`

(-30)(30) - (-6)(6)

-900 + 36

- 864