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October 22, 2014

October 22, 2014

Posted by **Tatiana** on Saturday, January 17, 2009 at 2:13pm.

then 4 times 2

then finally eight?

- Algebra -
**Damon**, Saturday, January 17, 2009 at 2:20pmlog x^n = n log x

so

log5 25^4 = 4 log5 25

25 = 5^2

so

4 log5 25 = 4 log5 5^2

= 4*2 log5 5

5^(log5 x) = x

5^(log5 5) = 5

so

log5 5 = 1

SO

4*2*1 = 8

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