Question

Реши уравнение
-x^2-3x+1=0

Answer 1

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Готово!!Удачи:)))

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Answer 2

$- x {}^{2} - 3x + 1 = 0 \\ \\ x {}^{2} + 3x - 1 = 0$

D = ( 3 )² - 4 * 1 * ( -1 ) = 9 + 4 = 13

$x1 = \frac{ - 3 - \sqrt{13} }{2} \\ \\ x2 = \frac{ - 3 + \sqrt{13} }{2}$

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