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afar2
@afar2
August 2022
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Помогите позязяззязяззя!!!
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Mirkhan
будет вот так как то
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andreji27
1. Lg(2-5x)=1
2-5x=10
-5x=8
5x=-8
X=-8/5=1 3/5
2. Log3(2x^2+x)=Log3(6)- Log3(2)
Log3(2x^2+x)=Log3(6:2)
Log3(3x^2+x)=Log3(3)
3x^2+x=1
3x^2+x-1=0
Д=4+12=16=4^2
X1=(-1+4)/6=0,5
X2=(-1-4)/6=-5/6
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Answers & Comments
будет вот так как то
2-5x=10
-5x=8
5x=-8
X=-8/5=1 3/5
2. Log3(2x^2+x)=Log3(6)- Log3(2)
Log3(2x^2+x)=Log3(6:2)
Log3(3x^2+x)=Log3(3)
3x^2+x=1
3x^2+x-1=0
Д=4+12=16=4^2
X1=(-1+4)/6=0,5
X2=(-1-4)/6=-5/6