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Number of 3×3 symmetric matrices with entries from {1, α, β} such that sum of each columns are 0, is
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Number of 3×3 symmetric matrices with entries from {1, α, β} such that sum of each columns are 0, is
![Find A if 3A-2B+C=0 where B=[3 4, 1 0] and C=[2 3, 1 2].](http://i.ytimg.com/vi/nwfHx8DJgzw/mqdefault.jpg "Find A if 3A-2B+C=0 where B=[3 4, 1 0] and C=[2 3, 1 2].")
![If A-2B=`|[1,-2],[3,0]| and 2A-3B=|[-3,3],[1,-1]|`, then B](http://i.ytimg.com/vi/wpx6MjQdlXc/mqdefault.jpg "If A-2B=`|[1,-2],[3,0]| and 2A-3B=|[-3,3],[1,-1]|`, then B")
![Q. If A'=[-2 3,1 2] and B'=[-1 0,1 2] then fund (A+2B)'. Matrices \/\/Class-12th\/\/ NCERT book](http://i.ytimg.com/vi/do32QHb0ZkU/mqdefault.jpg "Q. If A'=[-2 3,1 2] and B'=[-1 0,1 2] then fund (A+2B)'. Matrices \/\/Class-12th\/\/ NCERT book")
