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dixiedarlin
05-13-2006, 07:38 PM
hi having a problem trying to solve this rational expression with same denominator
2x-9 x-9
____ - _______
x(x-3) x(x-3)

____
x-3

stapel
05-13-2006, 10:19 PM
hi having a problem trying to solve this rational expression
Equations are solved; expressions are simplified. Do the instructions say to "solve" or to "simplify", or something else? I will guess "simplify".

2x-9 x-9
____ - _______
x(x-3) x(x-3)
I will guess that this means the following:

. . . . .(2x - 9)/(x(x - 3)) - (x - 9)/(x(x - 3))

...or, in LaTeX:

. . . . .\large{\frac{2x\,-\,9}{x(x\,-\,3)}\, -\,\frac{x\,-\,9}{x(x\,-\,3)}}

If so, then just combine the two numerators, simplify, and then cancel the common factor.

____
x-3
It is simple to check their equality: Either evaluate them at a few different x-values and verify that they return the same result. (For instance, what is the result if you evaluate each at x = 2?) Or else graph each in your calculator, and verify that they display the same graph.

Eliz.

Ti-Pro.doc.
05-14-2006, 08:46 PM
I have no idea what u said. :?: :?: :?: :?: :?: :?: :?: :?: :?:
stapel could u send it to me in a email form explaining what you just did.

stapel
05-14-2006, 10:31 PM
I have no idea what u said.
Which part did you not understand? Do you not know how to evaluate expressions? Or graph functions? Please reply with specifics. Thank you.

stapel could u send it to me in a email form explaining what you just did.
I'm sorry, but I do not offer private tutoring here. Please post which thing I "did" that you need clarified. (Note: The formatting with LaTeX is explained in the links in the "Forum Help" pull-down menu at the very top of the page.)

Thank you.

Eliz.

dixiedarlin
05-15-2006, 03:06 AM
yes I am having a problem figuring out what to do and I have a had time understanding math it has been about 18 years since I have taken math and this is math 099 in college. But thank you for your help.
thanks

Ti-Pro.doc.
05-17-2006, 09:42 AM
I have no idea what u said. :?: :?: :?: :?: :?: :?: :?: :?: :?:
stapel could u send it to me in a email form explaining what you just did.