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Solve: 2^x + 2^-x = 5. (In the example, the quadratic formula is used.)
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Solve: 2^x + 2^-x = 5.
(In the example, the quadratic formula is used.)

User Guvante
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18 votes

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Solve: 2^x + 2^-x = 5. (In the example, the quadratic formula is used.)-example-1
Solve: 2^x + 2^-x = 5. (In the example, the quadratic formula is used.)-example-2
User Christoph Hegemann
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