Решите пожалуйста.... . Created by ksyushazz. algebra-ru

Решите пожалуйста.... ...

ksyushazz @ksyushazz

October 2021 1 6 Report

Решите пожалуйста....

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Verified answer

x² + 5x + 2 = 0

x₁ + x₂ = - 5 x₁ * x₂ = 2

x₁²x₂ + x₁x₂² = x₁x₂ * (x₁ + x₂) = 2 * (- 5) = - 10

$\frac{x_{1} }{x_{2} }+\frac{x_{2} }{x_{1} }+2=\frac{x_{1}^{2}+x_{2}^{2}}{x_{1}x_{2}}+2=\frac{(x_{1}+x_{2})^{2} -2x_{1}x_{2}}{x_{1}x_{2}} +2=\frac{(-5)^{2}-2*2 }{2}+2=\frac{25-4}{2}+2=10,5+2=12,5$

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