SOLUTION: Solve logarithmic equation. 2 log (x+1) = 5

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Question 307745: Solve logarithmic equation.
2 log (x+1) = 5
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
First divide by 2:

2 log (x+1) = 5
log (x+1)=2.5

Re-write as log%2810%2Cx%2B1%29=2.5, which means 10%5E2.5=+x%2B1

Subtract 1 from each side:
x=10%5E2.5-1

Note: This answer can also be written as x=+10%5E2%2Asqrt%2810%29-1 or 100%2Asqrt%2810%29-1

I have quite a bit of explanation on Logarithms with examples solved in LIVING COLOR on my own website. Please go to "www2.seminolestate.edu/rrapalje". Look for the links on my Homepage "Basic, Intermediate, and College Algebra: One Step at a Time" and also "MATH IN LIVING COLOR", and look under "College Algebra" (Chapter 4).

I also have an entire explanation of Logarithms on video from my own teaching in class before I retired a few years ago. To see the videos, look for "Rapalje Videos in Living Color", and see College Algebra for the topic of Logarithms.

I think you will find the explanations, both written and video, much easier to understand than traditional textbooks. My own students did!!

Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus