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tanial2000
@tanial2000
July 2022
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Решите уравнение 2*2^2x-5*2^x+2=0
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amina254
2*2^2x-5*2^x+2=0
2^х=у
2у²-5у+2=0
Д=25-16=9=3²
у1=(5+3)/4=2
у2=(5-3)/4=1/2
1)2^х=2¹
х=1
2)2^х=1/2
2^х=2^-1
х=-1
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Answers & Comments
2^х=у
2у²-5у+2=0
Д=25-16=9=3²
у1=(5+3)/4=2
у2=(5-3)/4=1/2
1)2^х=2¹
х=1
2)2^х=1/2
2^х=2^-1
х=-1