SkyMad79
Https://www.kontrolnaya-rabota.ru/s/equal-one/any-uravnenie/?ef-TOTAL_FORMS=20&ef-INITIAL_FORMS=0&ef-MAX_NUM_FORMS=1000&X=x&solve=y%5E4-2x%5E2-18x%2B81%3D2xy%5E2&ef-0-s=&ef-1-s=&ef-2-s=&ef-3-s=&ef-4-s=&ef-5-s=&ef-6-s=&ef-7-s=&ef-8-s=&ef-9-s=&ef-10-s=&ef-11-s=&ef-12-s=&ef-13-s=&ef-14-s=&ef-15-s=&ef-16-s=&ef-17-s=&ef-18-s=&ef-19-s=&a0=-10&b0=10 вот решение уравнения здесь
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