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. 40 - 4 30 5 - 4 0 8 Ch

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Let nr40-42 A = 1 3o sl 1. Lau of J Mw (Al = 418 V-014 51-4130 & matrie A is not invertible (as IA) =o) Now; A=14o 47 1 3 0 5

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