Let \( x=\log _{\sqrt{5}}\left(\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\ldots \ldots \infty\right) ....
Let \( x=\log _{\sqrt{5}}\left(\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\ldots \ldots \infty\right) \) then
\( \mathrm{P} \)
(1) \( x=-2 \log _{5} 2 \)
(2) \( 5^{x}=2 \)
(3) \( (0.2)^{x}=4 \)
(4) \( (0.2)^{x}=2 \)
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