Question

2. Find the value of the following determinant:
- 13 3 23
- 30 - 7 53)
39 -9 - 70​

Answer 1

answer: -13(-9×53 -(-70×-7)) -3(-70×-30 -(39×53)) +23(-9×-30 -(39×-7)) =O

-13(-477-490) -3(2100-2067) +23(270+6573) =0

-13×-967 -3×33 +23×6843=0

12571-99+157389=0

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