The calculator will find the determinant of the square
2x
2 matrix
[2−λ515−λ], with steps shown.
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Cofactor Matrix Calculator
Solution
The determinant of a 2x2 matrix is ∣∣acbd∣∣=ad−bc.
∣∣2−λ515−λ∣∣=(2−λ)⋅(5−λ)−(1)⋅(5)=λ2−7λ+5
Answer
∣∣2−λ515−λ∣∣=λ2−7λ+5A