a Example: Suppose that det d det? с b+c 11a det fe+f -11d h+i -11g. Lg h determinant using elementary column operations: =-11 det -EL = 11 det a b+c a g b e f = -8. Compute the following i b+c c de+f f h+ii C h+i g (-C3) e+f d (C₁ → C3)

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