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azamat132004
@azamat132004
July 2022
2
1
Report
(3а-1)(3а+1)-(3а-1)2
2-квадрат
а=0,3
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oppression
4 votes
Thanks 10
azamat132004
спасибо оппресион
oppression
пожалуйста с:
julyap
Verified answer
(3а-1)(3а+1)-(3а-1)²=9а²-1-(9а²-6а+1)=9а²-1-9а²+6а-1=-2+6а,
если а=0,3, то -2+6·0,3=-2+1,8=-0,2.
Ответ: -0,2.
4 votes
Thanks 6
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Verified answer
(3а-1)(3а+1)-(3а-1)²=9а²-1-(9а²-6а+1)=9а²-1-9а²+6а-1=-2+6а,если а=0,3, то -2+6·0,3=-2+1,8=-0,2.
Ответ: -0,2.