SOLUTION: find the determinate of the matrix. Book shows below is 1 set or () (8+4a 4) (5+3a 3)

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Question 85211: find the determinate of the matrix. Book shows below is 1 set or ()
(8+4a 4)
(5+3a 3)
Answer by venugopalramana(3286) About Me  (Show Source):
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find the determinate of the matrix. Book shows below is 1 set or ()
(8+4a 4)
(5+3a 3)
D=(8+4A)*3-4(5+3A)=24+12A-20-12A=4