Предмет: Алгебра, автор: Герми16

Решите пожалуйста!!!
1) log frac{1}{2} (3x-4)-log1/2(3x+4)<log1/2(x-2)+2

Ответы

Автор ответа: svetova
0
log1/2( (3x-4)/(3x+4))<log1/2 (x-2)+log1/2 (1/4)
log1/2 (9x^2 -16)<log1/2 ((x-2)/4)
9x^2-16 <(x-2)/4
36x^2-64 <x-2
36x^2-x-62 <0
D=1+62×36×4=можешь посчитать?
х1=(1+корень из D)/72
x2=(1-корерь из D)/72

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