Oblicz x, jeżeli log x = 2- 2 log 5 + log 4.
logx=2-2log5+log4
logx=2-log25_log4
logx=2-log100
logx=2-2
log x=0
x=1
log x = 2 - 2 log 5 + log 4 = 2 - log 5^2 + log 4 = 2 - log 25 + log4 = 2 - log (25*4) =
= 2 - log 100 = 2 - 2 = 0
x = 10^0 = 1
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logx=2-2log5+log4
logx=2-log25_log4
logx=2-log100
logx=2-log100
logx=2-2
log x=0
x=1
log x = 2 - 2 log 5 + log 4 = 2 - log 5^2 + log 4 = 2 - log 25 + log4 = 2 - log (25*4) =
= 2 - log 100 = 2 - 2 = 0
x = 10^0 = 1
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