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Валерьянка846
@Валерьянка846
February 2022
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решите пж уравнение help
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krugly1981
X - 4/x = 3
( x^2 - 4) / x = 3
x^2 - 4 = 3x
x^2 - 3x - 4 = 0
D = b^2 - 4ac = 9 + 16 = 25 = 5^2
x1 = ( 3 + 5) / 2 = 4
x2 = ( 3 - 5) / 2 = - 1
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Answers & Comments
( x^2 - 4) / x = 3
x^2 - 4 = 3x
x^2 - 3x - 4 = 0
D = b^2 - 4ac = 9 + 16 = 25 = 5^2
x1 = ( 3 + 5) / 2 = 4
x2 = ( 3 - 5) / 2 = - 1