Question 335367
[A]={{{(matrix(2,2,2,-1,8,2))}}}
[x]={{{(matrix(2,1,x,y))}}}
[b]={{{(matrix(2,1,6,0))}}}
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det[A]={{{12}}}
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[A]inv={{{(1/12)*(matrix(2,1,-8,2))}}}
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[x]=[A]inv[b]={{{(matrix(2,1,1,-4))}}}