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PW2033
@PW2033
August 2022
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5^2х-30*5^х+125=0
Решительно плиз срочно
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dustInEyes
Verified answer
5^x=у
у²-30у+125=0
Д=900-500=400=20²
у1=(30+20)/2=50/2=25
у2=(30-20)/2=10/2=5
5^x1=25
5^x1=5^2
х1=2
5^x2=5
x2=1
Ответ: х1=2, х2=1
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Answers & Comments
Verified answer
5^x=уу²-30у+125=0
Д=900-500=400=20²
у1=(30+20)/2=50/2=25
у2=(30-20)/2=10/2=5
5^x1=25
5^x1=5^2
х1=2
5^x2=5
x2=1
Ответ: х1=2, х2=1