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if-a-b-c-b-c-d-c-d-a-d-a-b-a-d-




Question Number 54787 by behi83417@gmail.com last updated on 10/Feb/19
 if:  (a/( (√b)+(√c)))=(b/( (√c)+(√d)))=(c/( (√d)+(√a)))=(d/( (√a)+(√b)))  ⇒(a/d)=?
if:ab+c=bc+d=cd+a=da+bad=?

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