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SuSuSLiK
@SuSuSLiK
July 2022
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Алгебра 8 класс! Помогите пожалуйста решите уравнение
x^2 - 4x - 5 / 25 - x^2 = 0
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ShirokovP
Verified answer
ОДЗ
x ≠ - 5; x ≠ 5
x^2 - 4x - 5 = 0
D = 16 + 20 = 36
x1 = ( 4 + 6)/2 = 10/2 = 5 не удовлетворяет ОДЗ
x2 = (4 - 6)/2 = - 2/2 = - 1 удовлетворяет ОДЗ
Ответ
- 1
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Answers & Comments
Verified answer
ОДЗx ≠ - 5; x ≠ 5
x^2 - 4x - 5 = 0
D = 16 + 20 = 36
x1 = ( 4 + 6)/2 = 10/2 = 5 не удовлетворяет ОДЗ
x2 = (4 - 6)/2 = - 2/2 = - 1 удовлетворяет ОДЗ
Ответ
- 1