Решите неравенство быстрее,молю 81x^2>64. Created by KsenijaVolk84. algebra-ru

Решите неравенство быстрее,молю 81x^2>64...

KsenijaVolk84 @KsenijaVolk84

August 2021 1 10 Report

Решите неравенство быстрее,молю
81x^2>64

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kirichekov

Verified answer

81x²>64
81x²-64>0
(9x)²-8²>0
(9x-8)*(9x+8)>0 метод интервалов

x₁=8/9, x₂=-8/9
+ - +
--------------|-------------|----------- x
-8/9 8/9
x∈(-∞;-8/9)U(8/9;∞)

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