Explanation:
A=⎣⎢⎢⎡324−21−33−12⎦⎥⎥⎤,x=⎣⎢⎢⎡xyz⎦⎥⎥⎤,B=⎣⎢⎢⎡814⎦⎥⎥⎤
∣A∣=⎣⎢⎢⎡324−21−33−12⎦⎥⎥⎤
=3[1−3−12]−1(−2)[24−12]+3[241−3]⇒3(2−3)−2(4+4)+
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