Find the inverse of AB if A-1 = 5 5 0 -1 and 5 -4 B-1 = -4 5 (AB)-1 = [88]

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.3: Rules For Addition
Problem 40WE
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Question
Find the inverse of AB if
A-1 =
5 5
0 -1
and
5 -4
B-1
=
-4 5
(AB)-1
=
[88]
Transcribed Image Text:Find the inverse of AB if A-1 = 5 5 0 -1 and 5 -4 B-1 = -4 5 (AB)-1 = [88]
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