Question

calcule os logaritmos :
A) log25 0,008

Answer 1

25^x = 0,008
= (5^2)^x =8/1000
= 5^2^x = 2^3/10^3
= 5^2^x = (2/10)^3
= 5^2^x = (1/5)^3
= 5^2^x = 5^-3
= 2x = -3
= x=-3/2     <--- RESULTADO!