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Show that, |{:(" "a,b-c,c+b),(a+c," "b...

Show that,
`|{:(" "a,b-c,c+b),(a+c," "b,c-a),(a-b,b+a," "c):}|=(a+b+c)(a^2+b^2+c^2)`

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The correct Answer is:
`=(a+b+c)(a^2+b^2+c^2)`
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