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[(a+b,b+c,c+a)]=[(a,b,c)], then |
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Answer» `[(a,b,c)]=1` `rArr""(a+b)*{(b+c)xx(c+a)}=[abc]` ` IMPLIES(a+b).{bxxc+bxxa+cxxa}=[a" "b" "c][ :' cxxc =0]` `rArr""a*(bxxc)+BB*b(cxxa)=[abc]` `rArr""[abc]+[abc]=[abc]""[bca]=[abc]]` `rArr""[abc]=0` `rArr"a, b"` and c are cojplanar. |
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