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prove that, |{:(""-bc ,b^2+bc,c^2+bc),(a...

prove that, `|{:(""-bc ,b^2+bc,c^2+bc),(a^2+ac," "-ac,c^2+ac),(a^2+ab,b^2+ab," "-ab):}|=(ab+bc+ca)^3`

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The correct Answer is:
`=(ab+bc+ca)^3`
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