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olesiabolotina
@olesiabolotina
August 2022
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Решите пожалуйста. Срочно 2а(3а-5)-(а-3)(а-7)
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polinochkalove64
5а во второй степени - 21
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mari13516
6а-10а-(а^2-7а-3а+21)=
6а-10а-а^2+7а+3а-21=
6а-а^2-21 =0
решаем через дескриминант
а=6 в=-1 с=-21
д=(-1)^2-4*6*(-21)
0 votes
Thanks 0
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Answers & Comments
5а во второй степени - 21
6а-10а-а^2+7а+3а-21=
6а-а^2-21 =0
решаем через дескриминант
а=6 в=-1 с=-21
д=(-1)^2-4*6*(-21)