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Celine10000
@Celine10000
January 2020
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2 elevado a x -3 +2 elevado a x-1+2 elevado a x= 52
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3478elc
2 elevado a x -3 +2 elevado a x-1+2 elevado a x= 52
2^x -3 + 2^x-1 + 2^x = 52
2^x + 2^x + 2^x = 52 ==> 2^x + 2^x + 2^x = 52 mmc=8
2³ 2 8 2
2^x + 4.2^x + 8.2^x = 52 ==> 13.2^x = 52
2^x = 52 ==> 2^x = 4 ==> 2^x = 2² ==> x = 2
13
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Lista de comentários
2 elevado a x -3 +2 elevado a x-1+2 elevado a x= 52
2^x -3 + 2^x-1 + 2^x = 52
2^x + 2^x + 2^x = 52 ==> 2^x + 2^x + 2^x = 52 mmc=8
2³ 2 8 2
2^x + 4.2^x + 8.2^x = 52 ==> 13.2^x = 52
2^x = 52 ==> 2^x = 4 ==> 2^x = 2² ==> x = 2
13