X-2y^2=2 (y^2-у в квадрате)
3x+y=7
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x=7/3-y/3
подставляем во второе
7/3-2y^2-y/3=2
y^2+y/6-1/6=0
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По теореме Виета корни у1 и у2 удовлетворяют уравнениям:
y1+y2=-1/6
y1*y2=-1/6
Очевидно:
y1=1/3 y2=-1/2
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Соответственно:
x1=7/3-1/9=20/9=2 1/9
x2=7/3+1/6=15/6=2 1/2
1) 3, 8, 15, 24, 35, 48, 63, 80
2) 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14, 17, 16, 19, 18, 21, 20, 23, 22, 25, 24, 27, 26, 29, 28, 31, 30, 33, 32.