Thread: More rational expressions File attached

More rational expressions. I am trying to understand this but...

Find the LCD for the given and convert each into an equivalent rational expression with teh LCD as the denominator.

4 , 5x
---- --------
x-y 2y-2x

I factored what could be to get

4 , 5x
---- --------
x-y 2(y-x)

now I think the LCD is 2(y-x)


The next problem is

3 2b -5
---------- , --------- , -----------
4b^2 - 9 2b + 3 2b^2-3b

I factored what I could (I think)

3 2b -5
---------- , --------- , -----------
4b^2 - 9 2b + 3 b(2b-3)


Thanks again for your help!!

Originally Posted by Chester

More rational expressions. I am trying to understand this but...

Find the LCD for the given and convert each into an equivalent rational expression with teh LCD as the denominator.

4 , 5x
---- --------
x-y 2y-2x

I factored what could be to get

4 , 5x
---- --------
x-y 2(y-x)

now I think the LCD is 2(y-x)

Good.

The next problem is

3 2b -5
---------- , --------- , -----------
4b^2 - 9 2b + 3 2b^2-3b

I factored what I could (I think)

3 2b -5
---------- , --------- , -----------
4b^2 - 9 2b + 3 b(2b-3)

You can do more.


Therefore the LCD is,


Also, place your questions into,
"Pre-Algebra and Algebra" section.

Will do. Thanks!!