Question 355266
{{{(matrix(2,2,-5,-13,2,5))*(matrix(2,2,a,b,c,d))=(matrix(2,2,3,1,-4,0))}}}
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[A][x]=[b]
[x]=[A]inv[b]
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det[A]=1
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[A]inv={{{(matrix(2,2,5,13,-2,-5))}}}
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[x]=[A]inv[b]={{{(matrix(2,2,5,13,-2,-5))*(matrix(2,2,3,1,-4,0))}}}
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[x]={{{highlight((matrix(2,2,-37,5,14,-2)))}}}