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X2 6x. X2 7x 6 0 решение. 6,7x−x^2 = 0. (X-7)(X+6)<0. X^2-7x+6.
X2 7x 6 0 решение. 6,7x−x^2 = 0. (X-7)(X+6)<0. X^2-7x+6.

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