Delta Fares

evaluate delta in this matrix?Pls help..?

Express: delta = |2 6 -4| .............. | 6 4 4| .............. |3 2 6| in the form kD where k is a real number and D is a determinant having the elements 0 0 1 in the first row, in that order. Hence evaluate delta.

Public Comments

1. Greetings, |2 6 -4| |6 4 4| |3 2 6| .|1 3 -2| 4|3 2 2| remove factor of 2 from 1st row and 2 from 2nd row .|3 2 6| ..|3 2 6| -4|3 2 2| exchange first and 3rd rows ..|1 3 - 2| ..|0 0 4| -4|3 2 2| subtract second row from first ..|1 3 - 2| ...|0 0 1| -16|3 2 2| factor out 4 from first row ...|1 3 - 2| delta = -16*1*(3*3 - 1*2) = -16*(9 - 2) = -112 Regards