Q22 of 110 Page 260

Using properties of determinants prove that:




[R1’ = R1 - R2 & R2’ = R2 - R3]


[R1’ = R1 - R2]


[R1’ = R1/2]


[transforming row and column]


[R1’ = R1 - R2 & R2’ = R2 - R3]


[R1’ = R1 - R2]


= 2{0 + 0 + 2(0 - 2)} [expansion by first row]


. = - 8


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