tex]...

canira555a @canira555a

August 2022 1 18 Report

Найдите корни уравнения
[tex]{x}^{2} - 2x - 9 = 0[/tex]

Answers & Comments

kopatel228 X² - 2x - 9 = 0
D = b² - 4ac = 4 - 4 * 1 *(-9) = 40
x₁ = -b + √D / 2a = (2 + √40) / 2
x₂ = (2 - √40) / 2

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dim10102806 Ответ ±

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