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If bar(a)=bar(i)-2bar(j)+3bar(k), bar(b)...

If `bar(a)=bar(i)-2bar(j)+3bar(k), bar(b) = 2bar(i)+bar(j)+bar(k), bar(c ) = bar(i)+bar(j)+2bar(k)` then find
`|(axxb)xxc)| and |axx(bxxc)|`.

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