Question

Resolva:10 elevado a x=0,001

Answer 1

Olá Samylle 

10^x = 1/1000 = 10^-3 

x = -3 

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25^x  = √8/5 
 
x*log(25) = log(8)/2 - log(5)

x = (log(8)/2 - log(5)/(2*log(5))  = (3log(2) - 2log(5)/4log(5) = -0.17699

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25^x = 1/125

5^2x = 5^-3

2x = -3

x = -3/2