SOLUTION: z^2-64/8-z The simplified form is? I came up with Z^2-Z-8 is this correct?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: z^2-64/8-z The simplified form is? I came up with Z^2-Z-8 is this correct?      Log On


   

Question 282821: z^2-64/8-z
The simplified form is?
I came up with Z^2-Z-8 is this correct?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
It depends !
Does it mean
z^2-(64/8)-z
z%5E2-%2864%2F8%29-z
If that is the expression then yes you did it right.
`
or (z^2-64)/(8-z)
%28z%5E2-64%29%2F%288-z%29
if this is the expression (most likely) then no.
It can be factored into
(z-8)(z+8)/-(z-8)
%28z-8%29%28z%2B8%29%2F%28-1%2A%28z-8%29%29
-(z+8)
-z-8
Now you see why parentheses are so important.
Use them freely they are free