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Determinants

Level 4 / foundation

2x2 mixed (+/-9)

1 visual step / 2x2 diagonal difference

1. Diagonal formula

1. Diagonal formulaDown diagonal minus up diagonal.det =7-5-26|7 -5; -2 6|D = 32down: 7 x 6 = 42up: -5 x -2 = 1042 - 10 = 32
|7 -5; -2 6|: 7x6 - (-5)x(-2) = 32.

|7 -5; -2 6|: 7x6 - (-5)x(-2) = 32.

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