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serzhdeov76
@serzhdeov76
July 2022
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Упростите выражение (а + 3)^2-2а(3 -4а) и найдите его значение при а =- 1/3. В ответ запишите найденное значение.
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Banabanana
Verified answer
(а + 3)²-2а(3 -4а) = a²+6a+9-6a+8a = 9a²+9
при а=1/3
9a²+9 = 9*(1/3)² + 9 = 9*(1/9) + 9 = 1+9 = 10
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Answers & Comments
Verified answer
(а + 3)²-2а(3 -4а) = a²+6a+9-6a+8a = 9a²+9при а=1/3
9a²+9 = 9*(1/3)² + 9 = 9*(1/9) + 9 = 1+9 = 10