Question

срочно нужно решить
100^х=0.01√10
$( \frac{2}{5} ) {}^{x} \times (\frac{25}{8} ) {}^{x} = \frac{125}{64}$
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Answer 1

$1)100^{x}=0,01\sqrt{10}\\\\10^{2x}=10^{-2}*10^{\frac{1}{2}}\\\\10^{2x}=10^{-2+0,5}\\\\10^{2x}=10^{-1,5}\\\\2x=-1,5\\\\x=-0,75\\\\Otvet:\boxed{-0,75}$

$2)(\frac{2}{5})^{x}*(\frac{25}{8})^{x}=\frac{125}{64}\\\\(\frac{2}{5}*\frac{25}{8} )^{x} =\frac{125}{64}\\\\(\frac{5}{4})^{x}=(\frac{5}{4})^{3} \\\\x=3\\\\Otvet:\boxed{3}$

$3)\sqrt{2^{x}}=8^{-\frac{2}{3}}\\\\2^{\frac{x}{2}}=(2^{3})^{-\frac{2}{3}}\\\\2^{\frac{x}{2}}=2^{-2}\\\\\frac{x}{2}=-2\\\\x=-4\\\\Otvet:\boxed{-4}$