Photos 2Х 5 8Х Х

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2х 5 8х х. У=х2-х. Х²-25=(х²)(х+5). 3х²-5х+7=1+3х+х². 4х - х² ≥ 0.
У=х2-х. Х²-25=(х²)(х+5). 3х²-5х+7=1+3х+х². 4х - х² ≥ 0.

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