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Milash0909
@Milash0909
August 2021
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Помогите под в.Не проходите мимо
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tatianahumanity
9ˣ+4·3ˣ-5=0
Введём новую переменную t=3ˣ
t²+4t-5=0
t₁,t₂=-4+-√14+20/2
t₁=(-4-6)/2=-5
t₂=(-4+6)/2=1
t₁ -смысла не имеет
t₂=1
3ˣ=1
x=0
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Answers & Comments
Введём новую переменную t=3ˣ
t²+4t-5=0
t₁,t₂=-4+-√14+20/2
t₁=(-4-6)/2=-5
t₂=(-4+6)/2=1
t₁ -смысла не имеет
t₂=1
3ˣ=1
x=0