jika 4^m-1 + 4^m =15/4, maka 8^m adalah #ekaponen

[tex] \frac{ {4}^{m} }{4} + {4}^{m} = \frac{15}{4} \\ {4}^{m} + 4. {4}^{m} = 15 \\ 5. {4}^{m} = 15 \\ {4}^{m} = 3 \\ {8}^{m} = 3. {2}^{m} [/tex]