Use a common denominator to add or subtract. Simplify your answer. : 3/x - 4/x^2 - 9x

Question

anonymous · Answer

is this
 3           4           
---  -  ----  -  9x
  x         x^2

anonymous · Answer

(3/x - 4/x^2 - 9x)*x^2  = 3x - 4 -9x^3

anonymous · Answer

If my post is correct then take suzi20's answer over x^2 and you will have your answer

anonymous · Answer

no 4
-------
x^2 - 9x

anonymous · Answer

oh.. then you find the common denominator

x  = x
and x^2 - 9x =  x(x - 9)

so your common denominator is  x(x - 9)

(x-9)3                 4
-------   -    -------
   x(x-9)           x(x-9)

3x - 27                  4
------    -       --------
 x(x - 9)             x(x-9)

3x - 31
-------
x^2 - 9x

anonymous · Answer

3(x^2-9x)         4x
--------  -   --------
x(x^2-9x)        x(x^2-9x)

anonymous · Answer

oh i'm late hahhaa

anonymous · Answer

thanks so much :D