Friday

July 25, 2014

July 25, 2014

Posted by **Jeff** on Tuesday, March 18, 2008 at 2:22am.

4x 5x

----- - ----

x^2-9 x^2+4x-+3

I am really confused on the -+3 part, I don't know if my teacher made a typo or what, because without the - in that part it would be easily factorable.

- Algebra -
**Jeff**, Tuesday, March 18, 2008 at 2:23amoops it didnt write the question like i wanted it to, here I'll fix it

4x/x^2-9 - 5x/x^2+4x-+3

- Algebra -
**drwls**, Tuesday, March 18, 2008 at 3:28amI also think the -+ is a typo error by your teacher. Assume it is +

Then you have

4x/[(x+3)(x-3)] - 5x/[(x+3)(x+1)]

= [1/(x+3)][4x(x+1)-5x(x-3)]/[(x+1)(x-3)]

= [1/(x+3)][-x^2+19x]/[(x+1)(x-3)]

= -x(x-19)/[(x+1)(x-3)(x+3)]

I don't guarantee I did that right. I created a common denominator, but it is still pretty messy.

**Related Questions**

Algebra - Hi I am in need of help, please... The question says to perform the ...

Math - I need help with a few problems. Please help. Perform the indicated ...

Math - Need help with one more question. Which best describes a statistical ...

algebra - Perform the indicated operation. x/2+y/3-z/4

algebra - perform the indicated operation: 3/5 x 7/10

algebra - perform the indicated operation 7/5 * 8/3

algebra - perform the indicated operation 75/80=15/16

algebra - Perform the indicated operation (w^2-1)/(w-1) x (w^2+2w+1)

Algebra - [4,3_1,2]-[1,1_1,0]+[1,1_1,4] Re posting this one. this is a matrice ...

algebra - perform the indicated operation and simplify013/18 /20/27