Tìm x, biết:
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```
4) \(\left( \frac{5}{6} \right)^{2x-1} = \left( \frac{5}{6} \right)^{5}\)
5) \(\left( \frac{3}{4} \right)^{2x-1} = \left( \frac{3}{4} \right)^{4}\)
6) \(16 = \frac{2^{x}}{2}\)
7) \((-3)^{x} = -27\)
8) \(8^{x} \cdot 2^{x} = 4\)
9) \(\left( -\frac{1}{10} \right)^{x} = \frac{1}{100}\)
10) \(\left( -\frac{1}{10} \right)^{x} = 0,01\)
11) \(\left( -\frac{3}{2} \right)^{x} = \frac{9}{4}\)
12) \(\left( -\frac{3}{5} \right)^{x} = \frac{9}{25}\)
13) \(\left( -\frac{2}{3} \right)^{x} = \frac{-8}{27}\)
14) \(\left( -\frac{1}{2} \right)^{x} = -\frac{1}{8}\)
15) \(\left( \frac{2}{5} \right)^{x} = \frac{4}{25}\)
Bài 15. Tìm số nguyên x, nếu biết:
1) \(2^{x} = 4^{3}\)
2) \(2^{x} = 4^{6}\)
3) \(3^{x} = 9^{10}\)
4) \(2^{x} = 8^{3}\)
5) \(2^{x} = 8^{9}\)
6) \(3^{2x+2} = 9^{10}\)
```
```
4) \(\left( \frac{5}{6} \right)^{2x-1} = \left( \frac{5}{6} \right)^{5}\)
5) \(\left( \frac{3}{4} \right)^{2x-1} = \left( \frac{3}{4} \right)^{4}\)
6) \(16 = \frac{2^{x}}{2}\)
7) \((-3)^{x} = -27\)
8) \(8^{x} \cdot 2^{x} = 4\)
9) \(\left( -\frac{1}{10} \right)^{x} = \frac{1}{100}\)
10) \(\left( -\frac{1}{10} \right)^{x} = 0,01\)
11) \(\left( -\frac{3}{2} \right)^{x} = \frac{9}{4}\)
12) \(\left( -\frac{3}{5} \right)^{x} = \frac{9}{25}\)
13) \(\left( -\frac{2}{3} \right)^{x} = \frac{-8}{27}\)
14) \(\left( -\frac{1}{2} \right)^{x} = -\frac{1}{8}\)
15) \(\left( \frac{2}{5} \right)^{x} = \frac{4}{25}\)
Bài 15. Tìm số nguyên x, nếu biết:
1) \(2^{x} = 4^{3}\)
2) \(2^{x} = 4^{6}\)
3) \(3^{x} = 9^{10}\)
4) \(2^{x} = 8^{3}\)
5) \(2^{x} = 8^{9}\)
6) \(3^{2x+2} = 9^{10}\)
```