SarahFisher97
SarahFisher97 SarahFisher97
  • 02-11-2016
  • Mathematics
contestada

Using laws of logarithms, write the expression below as a single logarithm.
6 log(25-x^2) - [log(5+x)+log(5-x)]

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LittleRedMe
LittleRedMe LittleRedMe
  • 02-11-2016
If logs are subtracting, you can divide the brackets and if they are adding, you can multiply the brackets. Also, if the number comes before the log, it's can be Taken up as a power. so you end up with:

6log(25-x^2) - [log(5+X) + log(5-X)]

= log(25-x^2) - log(25-x^2)

= log (25-x^2/25-x^2)

= log(1)

log
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