Question

pls solve the question in the attatchement

Answer 1

Answer:

18CBA Dude That easy

Step-by-step explanation:

hope it helpful

Answer 2

Step-by-step explanation:

We know,

For any matrix A,

$\tt{ A \cdot \: adj( A ) = | A| \cdot I }$

$\tt{ \implies A^{ - 1} \cdot A \cdot \: adj( A ) = A^{ - 1}\cdot | A| \cdot I }$

$\tt{ \implies I\cdot \: adj( A ) =| A| \cdot A^{ - 1} \cdot I }$

$\tt{ \implies adj( A ) =| A| \cdot A^{ - 1} }$

Now, we have,

$\tt{ \blue{adj \left( A^{ - 1} \left( adj \: B \right) C^{ - 1} \right)}}$

$\tt{ = adj \left( A^{ - 1} \cdot |B| \: B^{ - 1} \cdot C^{ - 1} \right)}$

$\tt{ = | B | \: \: adj \left( A^{ - 1}B^{ - 1} \cdot C^{ - 1} \right)}$

$\tt{ = | B | \: \: adj \left( (BA )^{ - 1} \cdot C^{ - 1} \right)}$

$\tt{ = | B | \: \: adj \left( (C BA )^{ - 1} \right)}$

$\tt{ = | B | \: \cdot | C BA | \: C BA}$

$\tt{ = | B |^{2} \: \cdot | C| \cdot | A | \: C BA}$

$\tt{ = 9 \: \cdot \dfrac{1}{4} \cdot 2 \: C BA}$

$\tt{ = \dfrac{9}{2} \: C BA}$