Question 382233
log1- log25= 
natural log1-natural log8=
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logs are exponents, so subtraction means division
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log(1) - log(25) = log(1/25) = log(0.04)
Then it's calculator work
log(0.04) =~ -1.39794
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ln is used for natural logs
ln(1) - ln(8) = ln(1/8) = ln(0.125)
=~ -2.07944