Автор - hakerr564PWQJH

7.8.1) 0,25x2 – x + 1 = 0;
3) –3x2 + 11x + 4 = 0;
7.9.1) 3y2 + 7y + 4 = 0;
3) 9y2 – 6y + 1 = 0;
2) 7x2 + 18x + 5 = 0;
4) 9x2 – 4x – 2 = 0.
2) 3y2 – 6y + 3 = 0;
4) 2y2 + Oy - 486 = 0.
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Ответ

Автор - Seyitmyradova78

Объяснение:

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