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Z y2. (X-2)(X+2). (X-Y)^4 формула. (X-Y)(X+Y) формула. (X^2-2x)^9<(2x-x^2-2)^9.
(X-2)(X+2). (X-Y)^4 формула. (X-Y)(X+Y) формула. (X^2-2x)^9<(2x-x^2-2)^9.

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