Linear Algebra Examples

Find the Determinant [[7,9],[-2,-5]]
Step 1
The determinant of a matrix can be found using the formula .
Step 2
Simplify the determinant.
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Step 2.1
Simplify each term.
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Step 2.1.1
Multiply by .
Step 2.1.2
Multiply .
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Step 2.1.2.1
Multiply by .
Step 2.1.2.2
Multiply by .
Step 2.2
Add and .