Question

10^ x = (1/2) then 10^(-8x)=?​

Answer 1

easy

10^x= 1/2

taking -8 power both sides

10^-8x = 2^8 = 256

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Answer 2

taking log both side

log10^x=1/2

then multiply by both side -8

log10^-8=-8×log1/2

log10^-8 =256