- anonymous

x cubed over x squared - 4 divided by x cubed - 9x squared over x squared + 7x -18

- jamiebookeater

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- anonymous

could someone help me get started please

- amistre64

its difficult to parse the question; can you rewrite it into something more discernable please?

- amistre64

or use () paranthesis around stuff that is supposed to be grouped together? like perhaps:
(x cubed over x squared) - (4 divided by x cubed - 9x) squared over (x squared + 7x) -18

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## More answers

- anonymous

x cubed over x squared - 4 divided by x cubed - 9x squared over x squared + 7x- 18

- anonymous

x^3/x^2-4/x^3-9x^2/x^2+7x-18

- anonymous

Need to know where parentheses are.

- anonymous

no parentheses

- amistre64

that just leaves order of operations i guess :)

- amistre64

x - (4/x^3) - 9 +7x -18

- anonymous

@amistre64 yes

- amistre64

8x -27 -(4/x^3)
8x^4 -27x^3 -4
----------------
x^3

- anonymous

- (4/x^3) +8x -27

- anonymous

x squared divided by x cubed - 9x square
___________ _____________________
x squared - 4 x squared + 7x-18

- anonymous

sorry this is the question:
x cubed divided by x cubed - 9x squared
___________ ______________________
x squared - 4 x squared +7x - 18

- amistre64

\[\frac{\frac{x^3}{x^2-4}}{\frac{x^3 -9x^2}{x^2 +7x -18}} ???\]

- amistre64

that came out tiny ;)

- anonymous

thats it

- amistre64

factor everything so you know what to cancel out;
Also, take the bottom "fraction"; turn it over, spank it, and multiply it to the top "fraction"; like this:
xxx (x+9)(x-2)
--------- * ----------
(x-2)(x+2) xx (x-9)

- amistre64

Now cancel like terms top tp bottom
x(x+9)
----------
(x+2) (x-9)

- anonymous

thank you, I had it right, I really appreciate it.

- amistre64

youre welcome :) its alot easier to solve when you can "read" the problem ;)

- anonymous

are you ready for another one

- amistre64

I spose.... whatcha got?

- anonymous

m squared - n squared
--------------------
5m - n m = - 1/5 and n= 1/5

- amistre64

so you just fill in the variables with the values?

- amistre64

1/25 - 1/25 = 0
0/anything = 0

- anonymous

could someone please help me with factoring

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