Question

expand the determinant | 3 -5 -1 |
| 1 3 5 |
| -5 1 3 |

Answer 1

Step-by-step explanation:

3(9-5)-(-5)(3-(-25)+-1(1-(-15)

3×4+28×5-16

12+140-16

140-4

=136

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Answer 2

Step-by-step explanation:

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