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has. 1. What ____ you doing at 10.30? 2. Where _____ he buy his new coat? 3. Whe...
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Мелкая радача баллов: Решите пример: 2x^2+6x=6x-x^2...
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А теперь посложнее: 1) 9x^2-4=0 2) (x-3)^2+5x=9...
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