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Полина7016
@Полина7016
April 2021
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помогите,кто понимает как это решать? новая тема,не понимаю..
номер 417(1 и 2)
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krugly1981
1) x^2 - 100x = 0
x( x - 100) = 0
x = 0
x - 100 = 0
x = 100
Ответ x1 = 0, x = 100
2) 9/25x^3 - x = 0
x( 9/25x^2 - 1) = 0
x ( 3/5x - 1)(3/5 + 1) = 0
x = 0
3/5x - 1 = 0
3/5x = 1
x = 5/3
3/5x + 1 = 0
3/5x = - 1
x = - 5/3
Ответ: x1 = 0, x2 = 1 2/3, x3 = - 1 2/3
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Answers & Comments
x( x - 100) = 0
x = 0
x - 100 = 0
x = 100
Ответ x1 = 0, x = 100
2) 9/25x^3 - x = 0
x( 9/25x^2 - 1) = 0
x ( 3/5x - 1)(3/5 + 1) = 0
x = 0
3/5x - 1 = 0
3/5x = 1
x = 5/3
3/5x + 1 = 0
3/5x = - 1
x = - 5/3
Ответ: x1 = 0, x2 = 1 2/3, x3 = - 1 2/3