`|[(m+n)^(2), l^(2), mn], [(n+l)^(2), m^(2), ln], [(l+m)^(2), n^(2), l – InterviewSolution

InterviewSolution

1.	`\|[(m+n)^(2), l^(2), mn], [(n+l)^(2), m^(2), ln], [(l+m)^(2), n^(2), lm]\| =(l^(2) +m^(2) +n^(2))(l-m)(m-n)(n-l)(l+m+n)`
Answer» Apply `C_(1) to (C_(1) + C_(2) -2C_(3)) "and take"(l^(2) + m^(2) + n^(2)) "common from "C_(1)`

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