Question

Chapter: Matrices

Please solve as fast as u can ​

Answer 1

A=1(-2×1-2×1)-2(3×1-4×1)+3(3×2-4×-2)

= -4+2+42=40

A=40 then A³-23A-40=64000-920-40=63040

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Answer 2

Answer:

$|0 \: 0 \: 0 \\ 1 \: 2 \: 3 \\ 0 \: 0 \: 0|$

Step-by-step explanation:

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