The Purplemath Forums

Helping students gain understanding and self-confidence in algebra.

Skip to content

Need Help With This Exponential  TOPIC_SOLVED

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
Post a reply

Need Help With This Exponential

Postby austinallexis on Wed Oct 31, 2012 9:40 pm

this one too: solve for x (2x-3 is exponent of 125)
125^2x-3=1
austinallexis
 
Posts: 2
Joined: Wed Oct 31, 2012 6:28 pm
Top

Sponsor

Sponsor
 
Top

Re: Need Help With This Exponential  TOPIC_SOLVED

Postby maggiemagnet on Thu Nov 01, 2012 8:53 pm

austinallexis wrote:this one too: solve for x (2x-3 is exponent of 125)
125^2x-3=1

They show how to solve exponential equations here. I would start by remembering the power that is necessary to turn the base into "1". So what must "2x - 3" be equal to? Then I'd set 2x - 3 equal to that value, and solve for x.
:clap:
User avatar
maggiemagnet
 
Posts: 249
Joined: Mon Dec 08, 2008 12:32 am
Top
Post a reply

Return to Intermediate Algebra

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!