15 A = ( 2 + 6 + 9). 3 -69 by using cofactor expansion 4. (2) by using find det A row reduction

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.1: Equations
Problem 46E
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By hand solution needed only Q4 both parts (1 and 2) needed Needed to be solved correctly in 1 hour and get the thumbs up Please show me neat and clean work for it By hand solution needed only
015
A = 3 -69
2
61
(1) by using cofactor expansion
4.
2) by using
row reduction
find det A
Transcribed Image Text:015 A = 3 -69 2 61 (1) by using cofactor expansion 4. 2) by using row reduction find det A
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