1) (√13 - 10)² = (√13)²+ 10² - 2 * √13 * 10 = 113 - 20√30
2) Ответ:(а-б)² = а² - 2аб + б²
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1) (√13 - 10)² = (√13)²+ 10² - 2 * √13 * 10 = 113 - 20√30
2) Ответ:(а-б)² = а² - 2аб + б²