यदि a,b,c में से कोई शून्य नहीं है तो दि...

यदि a,b,c में से कोई शून्य नहीं है तो दिखाएँ कि
`Delta=|{:(-bc,b^(2)+bc,c^(2)+bc),(a^(2)+ac,-ac,c^(2)+ac),(a^(2)+ab,b^(2)+ab,-ab):}|=(bc+ca+ab)^(3)`

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