
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
October 1st, 2011, 02:10 PM  #1 
Newbie Joined: May 2011 Posts: 3 Thanks: 0  Positive Exponents
Write with only positive exponents. (3x^2 y) (2x^2 y) I got 6x^2 y^2 But the teacher got 6y^2 I don't understand how he got that Thanks. 
October 1st, 2011, 02:33 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 464 Math Focus: Calculus/ODEs  Re: Positive Exponents
We are given: to write using only positive exponents. Multiplying coefficients and like bases, there results: You incorrectly added exponents on the x terms and got 2 instead of 2  2 = 0. This term then becomes 1 and need not be written via the multiplicative identity property, i.e.: edit: You also have rewritten the original expression as: The factor in both numerator and denominator divide out, leaving: 

Tags 
exponents, positive 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Exponents  Aman Verma  Algebra  6  December 28th, 2013 10:55 PM 
exponents  mikeportnoy  Algebra  2  December 10th, 2008 08:14 AM 
Need Help Exponents  TH1  Algebra  3  April 25th, 2008 02:18 PM 
Exponents  johnny  Algebra  3  November 3rd, 2007 03:28 PM 
exponents  johnny  Algebra  2  August 1st, 2007 04:54 AM 