May 2019 1 18 Report
1.
 {9}^{2x} + {9}^{-2x}= 194 \\ {3}^{x} + {3}^{ - x} = ...
2.
 {2}^{2x} - 5. {2}^{x + 1} + 16 = 0
maka nilai x yang memenuhi adalah...

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