Question 422723
 [4w^2 - 12w + 36]/[2w^3 + 54]
-------
Factor to get:
[4(w^2-3w+9)]/[2(w^3+27)]
---
= [4(w^2-3w+9)]/[2(w+3)(w^2-3w+9)]
----
= [2]/[(w+3)]
======================================= 
[x^2 + ax - 4x - 4a]/[x^2 - 16]
---
= [x(x+a)-4(x+a)]/[(x-4)(x+4)]
---
= [(x+a)(x-4)]/[(x-4)(x+4)]
----
= (x+a)/(x+4)
====================
Cheers,
Stan H.
=====================