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Lessaladen12
@Lessaladen12
August 2022
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Решить уравнение:
1/x+2/x+2=1
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krugly1981
Умножаем все на x(x + 2):
x+ 2 + 2x = x( x + 2)
3x + 2 = x^2 + 2x
- x^2 + x + 2 =0
x^2 - x - 2 = 0
D = b^2 -4ac = 1 + 8 = 9= 3^2
x1 = ( 1 + 3) / 2 = 2
x2 = ( 1 - 3)/ 2 = - 1
2 votes
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Answers & Comments
x+ 2 + 2x = x( x + 2)
3x + 2 = x^2 + 2x
- x^2 + x + 2 =0
x^2 - x - 2 = 0
D = b^2 -4ac = 1 + 8 = 9= 3^2
x1 = ( 1 + 3) / 2 = 2
x2 = ( 1 - 3)/ 2 = - 1