Images 2 1 ФИ

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2 1 фи. Ab^2 = AC^2 + CB^2. |Ab+CB|. AC+CB = ab. ∣ ab ∣ − ∣ CB ∣ И ∣ ab − CB ∣.
Ab^2 = AC^2 + CB^2. |Ab+CB|. AC+CB = ab. ∣ ab ∣ − ∣ CB ∣ И ∣ ab − CB ∣.

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