Question

If A is a square matrix of order 3 & |Al=5 then lad) x=
(a) 15
(b) 25
(c) 15
(d) 0​

Answer 1

Answer:

we know that

adj A = |A|^n-1

where n is the order of the matrix so here

adj A = |A|^2

= 5^2=25

therefore (b)

Step-by-step explanation:

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