Images 4X 2X

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4x 2x. X2-XY-4y+4. X 2 4xy 4y 2. Y= 4/X, если x < 0. X2+4xy+4y2+5=0.
X2-XY-4y+4. X 2 4xy 4y 2. Y= 4/X, если x < 0. X2+4xy+4y2+5=0.

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