1.

Evaluate the following : [[8,-1,-8],[-2,-2,-2],[3,-5,-3]]

Answer»

Solution :`[[8,-1,-8],[-2,-2,-2],[3,-5,-3]]`
`-2[[8,-1,-8],[1,1,1],[3,-5,-3]]`
`(-2)[[9,7,-8],[0,0,1],[8,-2,-3]]` (Replacing `C_1`
and `C_2` by `C_1-C_2`
and `C_2-C_3`
RESPECTIVELY)
`-2 {-1[[9,7],[8,-2]]}`
= 2(-18-56)=2(-74)=-148


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