решите уравнение log(х^2+3x-3) по основанию 1/5=-2. Created by lizaku1998. algebra-ru

5=-2...

lizaku1998 @lizaku1998

August 2022 1 5 Report

решите уравнение log(х^2+3x-3) по основанию 1/5=-2

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sangers1959

Verified answer

Log₁/₅(x²+3x-3)=-2
ОДЗ: x²+3x-3>0 D=21 x≈-3,8 x≈0,8 x∈(-∞-3,8)U(0,8;+∞)
x²+3x-3=(1/5)⁻²
x²+3x-3=5²
x²+3x-3-25=0
x²+3x-28=0 D=121
x₁=-7 x₂=4
Ответ: х₁=-7 х₂=4.

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kakie osobennosti prirody blagopriyatstvuyut sozdaniyu prilivnyh elektrostancij na

chto iz perechislennogo harakterno dlya prirodnoj zony tajgi 1 vysokoe estestvenn

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