Images 2 1 ФИ

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2 1 фи. A2-b2/ab 1/b-1/a. Алгебра a ab-b2:a2 в2-a2. 1a2+1b2. (A+B)2/ab - (a-b)2/ab.
A2-b2/ab 1/b-1/a. Алгебра a ab-b2:a2 в2-a2. 1a2+1b2. (A+B)2/ab - (a-b)2/ab.

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