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loydulya
@loydulya
July 2022
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Решите уравнение: х(x² + 2х + 1) = 2(х + 1)
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Answers & Comments
EloviY
X(x+1)² = 2(x+1)
(x+1)² - 2(x+1) = 0
(x+1) * (x²+x-2) = 0
x+1 = 0
x= - 1
x²+x-2 = 0
D = 1+8 = 9 = 3²
x = -1 +3 / 2 = 1
x = -1-3 / 2 = -2
Ответ
x= -1
x= 1
x = -2
1 votes
Thanks 1
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Answers & Comments
(x+1)² - 2(x+1) = 0
(x+1) * (x²+x-2) = 0
x+1 = 0
x= - 1
x²+x-2 = 0
D = 1+8 = 9 = 3²
x = -1 +3 / 2 = 1
x = -1-3 / 2 = -2
Ответ
x= -1
x= 1
x = -2