MCQ
If $A =\left[\begin{array}{rr}5 & -2 \\ 4 & 3\end{array}\right]$, then $A (\operatorname{adj} A )=$__________.
  • A
    $I$
  • B
    $A$
  • $23 I$
  • D
    $23 A$

Answer

Correct option: C.
$23 I$
C

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