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Y 2x x. Парабола y 4x2. Y=(x2+4)(x-2)/2-x. Парабола -x^2=4x=y. Y=x2+4x-5.
Парабола y 4x2. Y=(x2+4)(x-2)/2-x. Парабола -x^2=4x=y. Y=x2+4x-5.

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