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Express the matrix B=[[2,-2,-4],[-1, 3,4...

Express the matrix `B=[[2,-2,-4],[-1, 3,4],[ 1,-2,-3]]`as the sum of a symmetric and skew symmetric matrix.

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Given `B=[[2,-2,-4],[-1, 3,4],[ 1,-2,-3]]`
`B'=[[2, − 1,1],[ − 2, 3, -2],[ ...
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