The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Math Topics »

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Operations with algebraic fractions assistance please
Replies: 2   Last Post: Jan 30, 2012 8:33 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
George Ivey

Posts: 9
From: here
Registered: 1/30/12
Re: Operations with algebraic fractions assistance please
Posted: Jan 30, 2012 8:33 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

You might also mean (putting the parentheses differently) (5/x+ 6/x^2)/(25/x^2- 36/x)

First do the numerator and denominator separately: add 5/x+ 6/x^2. The least common denominator is x^2: 5x/x^2+ 6/x^2= (5x+ 6)/x^2.

Add 25/x^2- 36/x= 25/x^2- 36x/x^2= (25- 36x)/x^2.

Now, "invert and multiply":
[(5x+ 6)/x^2][x^2/(25- 36x)]
The x^2 terms cancel leaving (5x+ 6)/(25- 36x)

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.