(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Hello, I am stuck on this particular question for my homework.

It is a 4x4 Matrix that consists of

a b b b

b a b b

b b a b

b b b b

3. The attempt at a solution

My approach has been to factor out the a to give the first row of 1 b b b and then use that to make the first column consist of

1

0

0

0

and so i can then do the cofactor expansion and reduce it to a 3x3 matrix. but after that step, it gets extremely tedious and i believe that the approach must be wrong.

Can anyone point out a simpler approach to this question or was I on the right track and just have to endure the tedious algebra?

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# Homework Help: Determinant of a 4x4 Matrix Stuck

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