Com 2x + 2elevado a -x = 3, qual é o valor numérico de 4elevado a x + 4elevado a -x?
2^x + 1/2^x = 3
(2^x + 1/2^x)² = 3²
4^x + 2 + 1/4^x = 9
4^x + 1/4^x = 7
pronto
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Verified answer
2^x + 1/2^x = 3
(2^x + 1/2^x)² = 3²
4^x + 2 + 1/4^x = 9
4^x + 1/4^x = 7
pronto