SOLUTION: Use the properties of determinants to find the following determinants without a full set of calculations 1. Find |243 0 -387| |26 0 -98| |598 0 489

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Question 657517: Use the properties of determinants to find the following determinants without a full set of calculations
1. Find |243 0 -387|
|26 0 -98|
|598 0 4891|
2. If |3 0 -3| |6 0 -3|
|2 1 0|=9, then find |4 1 0|
|0 -2-1| |0-2 -1|



3.If |3 0 -3| | 3 0 -3 |
|2 1 0|=9, then find |(2+0) (1-2) (0-1)|
|0-2 -1| | 0 -2 -1 |
4.If A-[2 -4] find A^-1
[-2 5]
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