Question 358359
[A]={{{(matrix(3,3,2,2,3,5,-2,3,1,-5,-2))}}}
[x]={{{(matrix(3,1,x,y,z))}}}
[b]={{{(matrix(3,1,2,0,-4))}}}
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[A][x]=[b]
[x]=[A]inv[b]
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det[A]={{{-5}}}
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[A]inv={{{-(1/5)*(matrix(3,3,19,-11,12,13,-7,9,-23,12,-14))}}}
[x]=[A]inv[b]={{{(matrix(3,1,2,2,-2
))}}}