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X2 7x. X2-49=0. (X-1)^2(X-5)<0. Уравнение x1 x2. (X-2)(-X-1)=0.
X2-49=0. (X-1)^2(X-5)<0. Уравнение x1 x2. (X-2)(-X-1)=0.

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