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bbald
@bbald
June 2022
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Помогите решить уравнение x-17=-(160/x+7)
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krugly1981
X - 17 = - 160/x - 7
x + 160/x = 17 - 7
( x² + 160) / x = 10
10x = x² + 160
- x² + 10x - 160 = 0
x² - 10x + 160 = 0
D = b² - 4ac = 100 - 4 × 160 = 100 - 640 = - 540 - дискриминант отрицательный,значит,корней нет.
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Answers & Comments
x + 160/x = 17 - 7
( x² + 160) / x = 10
10x = x² + 160
- x² + 10x - 160 = 0
x² - 10x + 160 = 0
D = b² - 4ac = 100 - 4 × 160 = 100 - 640 = - 540 - дискриминант отрицательный,значит,корней нет.