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Alinasheiver2007
@Alinasheiver2007
August 2022
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Х7(х+3)+2(Х+3)=37
решите уравнением
прошу умоляю
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Julianna505
7х^2 + 21х + 2х + 6 = 37
7х^2 + 23х + 6 = 37
7х^2 + 23х - 31 = 0
D = 529 - 4*7*(-31) = 1397
х1 = (- 23 + ✓1397)/14
х2 = (-23 - ✓1397)/14
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Alinasheiver2007
спасибо но что означает ^ и
Julianna505
квардрат
Julianna505
7 в квадрате
Julianna505
то есть возведение в степень
Alinasheiver2007
а что означает галочка
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Answers & Comments
7х^2 + 23х + 6 = 37
7х^2 + 23х - 31 = 0
D = 529 - 4*7*(-31) = 1397
х1 = (- 23 + ✓1397)/14
х2 = (-23 - ✓1397)/14