Question

f(x) = log x e E = f(25) + f(4)

Answer 1

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$f(x)=logx \\ \\ E=f(25)+f(4) \\ \\ E=\log25+\log4 \\ \\ E=\log(25\times4) \\ \\ E=\log100 \\ \\ 10^{E}=100 \\ \\ 10^{E}=10^2 \\ \\ E=2$