Images 19 A B C ОТВЕТ

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19 a b c ответ. (2a-b)^3-(2a+b)^3. C^2=A^2+B^2-2*. (3a+b)^2. 3а2/b:b/a3.
(2a-b)^3-(2a+b)^3. C^2=A^2+B^2-2*. (3a+b)^2. 3а2/b:b/a3.

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