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TupayaKopoBka
@TupayaKopoBka
July 2022
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log2^2(x)-log2(x-2)/log2(x+1)
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sedinalana
Verified answer
ОДЗ
log(2)x≠-1
x≠0,5
log(2)x=a
a²-a-2=a+1
a²-2a-3=0
a1+a2=2 U a1*a2=-3
a1=-1⇒log(2)x=-1 не удов усл
a2=3⇒log(2)x=3⇒x=8
1 votes
Thanks 1
TupayaKopoBka
> a1+a2=2 U a1*a2=-3
TupayaKopoBka
Поясните, что делаете в это строчке?
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Answers & Comments
Verified answer
ОДЗlog(2)x≠-1
x≠0,5
log(2)x=a
a²-a-2=a+1
a²-2a-3=0
a1+a2=2 U a1*a2=-3
a1=-1⇒log(2)x=-1 не удов усл
a2=3⇒log(2)x=3⇒x=8