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ася992
@ася992
August 2022
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5^x-0,2^x-1=4 решите уравнение
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treez0r
5^x-(1/5)^(x-1)=4
T=5^x>0
T-5/T=4
(T²-4T-5)/T=0
T²-4T-5=0
(T+1)(T-5)=0
T=-1 - не уд. усл. T>0
T=5 => x=1
2 votes
Thanks 5
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Answers & Comments
T=5^x>0
T-5/T=4
(T²-4T-5)/T=0
T²-4T-5=0
(T+1)(T-5)=0
T=-1 - не уд. усл. T>0
T=5 => x=1