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msnyamkina
@msnyamkina
July 2022
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(a+3)в квадрате -2a(3-4a) найдите значение выражения.при a =-1/3
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Banabanana
Verified answer
(а+3)² - 2а(3-4а) = а² + 6а + 9 - 6а + 8а² = 9а² + 9
при а=-1/3
9а² + 9 = 9*(1/3)² + 9 = 9*(1/9) + 9 = 1+9 = 10
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Verified answer
(а+3)² - 2а(3-4а) = а² + 6а + 9 - 6а + 8а² = 9а² + 9при а=-1/3
9а² + 9 = 9*(1/3)² + 9 = 9*(1/9) + 9 = 1+9 = 10