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Hi,
I am in an Algebra II class. I already took it years ago, but I am taking it again as a refresher. I have done two problems that I uploaded for this community to check to see if I have the right answer. I wrote out the whole equation. This will probably be very easy for the members here.
1.) This is a subtraction and simplifying of a rational expression.
http://i53.tinypic.com/24nh2zn.jpg
2.) This is a find the domain problem...
http://i51.tinypic.com/5p0eog.jpg
Quote:
Originally Posted by dudeman893
for the first one :D
$\displaystyle \displaystyle \frac {8xy}{x^2-y^2} - \frac {x-y}{x+y} $
$\displaystyle \displaystyle \frac {8xy}{(x-y)(x+y)} - \frac {x-y}{x+y} $
$\displaystyle \displaystyle \frac {8xy - (x-y)(x-y)}{(x-y)(x+y)} $
........... and so on :D
for the secon one
$\displaystyle \displaystyle \frac {6}{x(x-7)} $
$\displaystyle x(x-7) =0 \Rightarrow x_1=0 ; x_2 = 7 $
so it's $\displaystyle x \in (-\infty , 0) \cup (0 , 7 ) \cup ( 7, +\infty) $
that means that function is not defined just for x=0 , and x=7 :D
