Saturday

August 30, 2014

August 30, 2014

Posted by **math** on Monday, March 14, 2011 at 10:00pm.

2 ln(x-3)= ln(x+5) + ln4

- amy -
**MathMate**, Monday, March 14, 2011 at 11:43pmUse the laws of logarithm:

ln a + ln b = ln ab

2ln a = ln a²

2 ln(x-3)= ln(x+5) + ln4

=>

ln(x-3)² = ln 4(x+5)

Raise to power of e:

(x-3)² = 4(x+5)

Simplify and factor to get:

(x-11)*(x+1)=0

Can you take it from here?

- amy -
**math**, Tuesday, March 15, 2011 at 12:20amyes thank you much! :)

- amy :) -
**MathMate**, Tuesday, March 15, 2011 at 12:33am:)

**Related Questions**

Math - Amy has a collection of X,Y, and Z's. Every X is a Y. One-half the Z's ...

math - 2^(x^2 - 35)= 4^x How do I solve this? The x^2 is messing me up. So far I...

Calculus - Solve for x in the equation ln(16-12x)-2lnx = ln4

Calculus - Solve for x in the equation ln(16-12x)-2lnx)= ln4

Physics - billy and amy want to ride their bikes from their neighborhood to ...

calculus - I'm feeling pretty stupid right now because I can't remember how to ...

Math - bill and amy want to ride their bikes from thier neighborhood to school ...

St monica - Bill and Amy want to ride their bikes from their neighbourhood to ...

Science - Bill and Amy want to ride their bikes from their neighborhood to ...

Science NEED HELP NOW - Bill and Amy want to ride their bikes from their ...