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turcenkokira00
@turcenkokira00
April 2023
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2 (9a² +3а+1) (3а -1), якщо а=⅓
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KristoffMayor
Ответ:27а³
Пошаговое объяснение:
0 votes
Thanks 1
yavalina45
Відповідь:
Пояснення: 2(9а(2)+3а+1)(3а-1)=(18а2+6а+2)(3а-1)=54а3-18а2+18а2-6а+6а-2=54а3-2
Тоді, якщо а=1/3, то 54а3-2:
54(1/3(3))-2=54*1/27-2=0
54*1/27=2/1*1/1=2
1 votes
Thanks 1
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Answers & Comments
Ответ:27а³
Пошаговое объяснение:
Пояснення: 2(9а(2)+3а+1)(3а-1)=(18а2+6а+2)(3а-1)=54а3-18а2+18а2-6а+6а-2=54а3-2
Тоді, якщо а=1/3, то 54а3-2:
54(1/3(3))-2=54*1/27-2=0
54*1/27=2/1*1/1=2