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How do you (((z^2)+(6*z+4))/((z^3)+8))/(1/-1) in partial fractions?

An expression to simplify:

The solution

You have entered [src]
/ 2          \
|z  + 6*z + 4|
|------------|
|    3       |
\   z  + 8   /
--------------
     -1.0     
$$\frac{\left(z^{2} + \left(6 z + 4\right)\right) \frac{1}{z^{3} + 8}}{-1.0}$$
((z^2 + 6*z + 4)/(z^3 + 8))/(-1.0)
Fraction decomposition [src]
0.166666666666667/(1.0 + 0.5*z) - 0.666666666666667*(1.0 + 0.5*z)/(1.0 + 0.25*z^2 - 0.5*z)
$$- \frac{0.666666666666667 \left(0.5 z + 1.0\right)}{0.25 z^{2} - 0.5 z + 1.0} + \frac{0.166666666666667}{0.5 z + 1.0}$$
0.166666666666667   0.666666666666667*(1.0 + 0.5*z)
----------------- - -------------------------------
   1.0 + 0.5*z                       2             
                         1.0 + 0.25*z  - 0.5*z     
General simplification [src]
 /           2        \ 
-\4.0 + 1.0*z  + 6.0*z/ 
------------------------
              3         
         8 + z          
$$- \frac{1.0 z^{2} + 6.0 z + 4.0}{z^{3} + 8}$$
-(4.0 + 1.0*z^2 + 6.0*z)/(8 + z^3)
Common denominator [src]
     /           2        \
-1.0*\4.0 + 1.0*z  + 6.0*z/
---------------------------
                   3       
        8.0 + 1.0*z        
$$- \frac{1.0 \left(1.0 z^{2} + 6.0 z + 4.0\right)}{1.0 z^{3} + 8.0}$$
-1.0*(4.0 + 1.0*z^2 + 6.0*z)/(8.0 + 1.0*z^3)
Assemble expression [src]
     /     2      \
-1.0*\4 + z  + 6*z/
-------------------
            3      
       8 + z       
$$- \frac{1.0 \left(z^{2} + 6 z + 4\right)}{z^{3} + 8}$$
-1.0*(4 + z^2 + 6*z)/(8 + z^3)
Combinatorics [src]
      /     2      \  
 -1.0*\4 + z  + 6*z/  
----------------------
        /     2      \
(2 + z)*\4 + z  - 2*z/
$$- \frac{1.0 \left(z^{2} + 6 z + 4\right)}{\left(z + 2\right) \left(z^{2} - 2 z + 4\right)}$$
-1.0*(4 + z^2 + 6*z)/((2 + z)*(4 + z^2 - 2*z))
Trigonometric part [src]
     /     2      \
-1.0*\4 + z  + 6*z/
-------------------
            3      
       8 + z       
$$- \frac{1.0 \left(z^{2} + 6 z + 4\right)}{z^{3} + 8}$$
-1.0*(4 + z^2 + 6*z)/(8 + z^3)
Rational denominator [src]
      2      
 4 + z  + 6*z
-------------
            3
-8.0 - 1.0*z 
$$\frac{z^{2} + 6 z + 4}{- 1.0 z^{3} - 8.0}$$
(4 + z^2 + 6*z)/(-8.0 - 1.0*z^3)
Combining rational expressions [src]
     /     2      \
-1.0*\4 + z  + 6*z/
-------------------
            3      
       8 + z       
$$- \frac{1.0 \left(z^{2} + 6 z + 4\right)}{z^{3} + 8}$$
-1.0*(4 + z^2 + 6*z)/(8 + z^3)
Powers [src]
     /     2      \
-1.0*\4 + z  + 6*z/
-------------------
            3      
       8 + z       
$$- \frac{1.0 \left(z^{2} + 6 z + 4\right)}{z^{3} + 8}$$
            2        
-4.0 - 1.0*z  - 6.0*z
---------------------
             3       
        8 + z        
$$\frac{- 1.0 z^{2} - 6.0 z - 4.0}{z^{3} + 8}$$
(-4.0 - 1.0*z^2 - 6.0*z)/(8 + z^3)
Numerical answer [src]
-1.0*(4.0 + z^2 + 6.0*z)/(8.0 + z^3)
-1.0*(4.0 + z^2 + 6.0*z)/(8.0 + z^3)