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ЗаЙкАвКеДаХ155
@ЗаЙкАвКеДаХ155
July 2022
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Помогите решить уравнение из сборника ОГЭ 2016 вариант 11 номер 21, пожалуйста
1/х^2-1/х-6=0
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nKrynka
Решение
1/x² - 1/x - 6 = 0
(1/x) = t
t² - t - 6 = 0
t₁ = - 2
t₂ = 3
1) 1/x = - 2
x₁ = - 1/2
2) 1/x = 3
x₂ = 1/3
1 votes
Thanks 6
vladislav68
1-x-6x^2=0
-6x^2-x+1=0
6x^2+x-1=0
D=25
x1=(-1+5):12=1/3
x2=(-1-5):12=-0,5
Ответ:-0,5;1/3
3 votes
Thanks 6
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Answers & Comments
1/x² - 1/x - 6 = 0
(1/x) = t
t² - t - 6 = 0
t₁ = - 2
t₂ = 3
1) 1/x = - 2
x₁ = - 1/2
2) 1/x = 3
x₂ = 1/3
-6x^2-x+1=0
6x^2+x-1=0
D=25
x1=(-1+5):12=1/3
x2=(-1-5):12=-0,5
Ответ:-0,5;1/3