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Kenoby
@Kenoby
August 2022
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4lgx^2-lg^2(-x)=16
Помогите срочно надо!!!ПОЖАЛУЙСТА
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mmb1
Verified answer
4lgx^2-lg^2(-x)=16
x<0
8lg(-x)-lg^2 (-x)=16
lg(-x)=t
8t-t^2=16
t^2-8t+16=0
(t-4)^2=0
t=4
lg(-x)=4
x=-10^4=-10000
16 votes
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Verified answer
4lgx^2-lg^2(-x)=16x<0
8lg(-x)-lg^2 (-x)=16
lg(-x)=t
8t-t^2=16
t^2-8t+16=0
(t-4)^2=0
t=4
lg(-x)=4
x=-10^4=-10000