Question

Solve the following 3^x+3^-x-2=0.

Answer 1

Answer:

${3}^{x} + {3}^{ - x} - 2 = 0 \\ \\ = \frac{ {3}^{x} }{ {3}^{x} } - 2 \\ \\ = 1 - 2 = - 1$

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