Math, asked by spdeshmukh04101999, 11 months ago

if A=[1 3 3
3 1 3
3 3 1]
Prove that A^2 - 5A is a scalar matrix.

Answers

Answered by paulsoumya2000

15

Step-by-step explanation:

as all the diagonal entries are non zero, it is a scalar matrix of order 3×3.

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