0.2^{2x}-4.2\cdot0.2^{x}+0.8=0

5^{2x}-5\cdot5^{x}+4=0

0.5^{2x-1}-1.25\cdot0.5^{x}+0.125=0

5^{x}+\frac{3}{5^{x}}=4

3^{2x}-7\cdot3^{x}+12=0

10^{x}+\frac{20}{10^{x}}=12

0.25^{x}-0.5^{x+3}+0.5^{x}-0.5=0

0.5^{x}+\frac{2.25}{0.5^{x}}=5

0.5^{x}+\frac{0.1875}{0.5^{x}}=3.0625

10^{2x}-5\cdot10^{x}+4=0

0.5^{x}+\frac{1.5}{0.5^{x}}=3.5

10^{2x-1}-101\cdot10^{x}+1000=0

0.2^{x}+\frac{0.0024}{0.2^{x}}=1.5016

0.2^{2x-1}-1.2\cdot0.2^{x}+0.04=0

0.5^{2x-1}-1.25\cdot0.5^{x}+0.125=0

3^{2x-1}-28\cdot3^{x}+81=0

2^{x}+\frac{4.5}{2^{x}}=5.5

5^{2x-1}-6\cdot5^{x}+25=0

0.25^{x}-0.5^{x+1}+0.5^{x}-0.5=0

0.04^{x}-0.2^{x+3}+0.2^{x}-0.032=0

10^{2x-1}-1001\cdot10^{x}+10000=0

0.25^{x}-0.5^{x+4}+0.5^{x}+0.25=0

0.04^{x}-0.2^{x+2}+0.2^{x}+0.16=0

2^{x}+\frac{6}{2^{x}}=5