Question 1199084
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If you expand the determinant of the second matrix into the long formula in accordance 
with the definition of the determinant,  you will see that each term of this 
decomposition is  (-6)  times the corresponding term of the expansion of the original matrix.


Therefore, the determinant of the second matrix is  (-6)  times the determinant of the original matrix.


<U>ANSWER</U>.  &nbsp;&nbsp;&nbsp;&nbsp;The determinant of the second matrix is  &nbsp;&nbsp;(-6)*5 = -30.


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Solved, &nbsp;answered and explained.