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| discriminante dell'equazione quadratica | |||
| Russian thesaurus | |||
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| ax2 + bx + c = 0 - выражение b2 - 4ac = D -> по знаку которого судят о наличии у этого уравнения действительных корней D ? 0. Большой Энциклопедический словарь | |||
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