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Keeeek340
@Keeeek340
July 2022
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2х в квадрате+15х+7=0
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кляча
Verified answer
2х^2 + 15x + 7 = 0
D = 225 - 4 * 7 * 2 = 225 - 56 = 169: √D = 13
x1 = (-15 + 13) /4 = - 2/4 = - 1/2
x2 = (-15 - 13) /4 = -7
Ответ: х1 = - 1/2
х2 = - 7
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Keeeek340
Спасибо огромное, если не сложно, то помоги с уравнением, пожалуйста, буду очень благодарна!!
Keeeek340
3х в квадрате-2х+15=0
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Answers & Comments
Verified answer
2х^2 + 15x + 7 = 0D = 225 - 4 * 7 * 2 = 225 - 56 = 169: √D = 13
x1 = (-15 + 13) /4 = - 2/4 = - 1/2
x2 = (-15 - 13) /4 = -7
Ответ: х1 = - 1/2
х2 = - 7