Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer....

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Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer. - 3 30 20 6 -40 9 Choo

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3 - 3 determinant EA Finding : :) 2 4 0 9 t 2 Columns having all Keroes) then 141=0 invertible then matrix is not As 141=0 a

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