# Precalculus Examples

Step 1

Subtract the corresponding elements.

Step 2

Step 2.1

Add and .

Step 2.2

Subtract from .

Step 2.3

Subtract from .

Step 2.4

Subtract from .

Step 3

The determinant of a matrix can be found using the formula .

Step 4

Step 4.1

Simplify each term.

Step 4.1.1

Multiply by .

Step 4.1.2

Multiply .

Step 4.1.2.1

Multiply by .

Step 4.1.2.2

Multiply by .

Step 4.2

Add and .