SOLUTION: z-8/z-9-z+1/z-9+z-27/x^2-81=

Algebra ->  Test -> SOLUTION: z-8/z-9-z+1/z-9+z-27/x^2-81=      Log On


   

Question 549584: z-8/z-9-z+1/z-9+z-27/x^2-81=
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
[z-8/z-9]-[z+1/z-9]+[z-27/z^2-81]
Multiply thru by z^2-81
-----------------
= (z-8)(z+9) - (z+1)(z+9) + (z-27)
-----------------
= z*2+z-72 - (z^2+10z+9) + z-27
-----------
= (z-10z+z)+(-72-9-27)
-----------
= -8z-108
------------
Cheers,
Stan H.