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@12242154255
July 2022
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Найдите сумму и разности многочленов:
а) 3а²+7а-5 и 3а²+1
б)5а+3 и -2а²+а+7
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Verified answer
3a² + 7a - 5 + (3a² + 1) = 3a² + 7a - 5 + 3a² + 1 = 6a² + 7a - 4
3a² + 7a - 5 - (3a² + 1) = 3a² + 7a - 5 - 3a² - 1 = 7a - 6
5a + 3 + (- 2a² + a + 7) = 5a + 3 - 2a² + a + 7 = - 2a² + 6a + 10
5a + 3 - ( - 2a² + a + 7) = 5a + 3 + 2a² - a - 7 = 2a² + 4a - 4
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Answers & Comments
Verified answer
3a² + 7a - 5 + (3a² + 1) = 3a² + 7a - 5 + 3a² + 1 = 6a² + 7a - 43a² + 7a - 5 - (3a² + 1) = 3a² + 7a - 5 - 3a² - 1 = 7a - 6
5a + 3 + (- 2a² + a + 7) = 5a + 3 - 2a² + a + 7 = - 2a² + 6a + 10
5a + 3 - ( - 2a² + a + 7) = 5a + 3 + 2a² - a - 7 = 2a² + 4a - 4