Find Sum of Variables

[nycmathguy]

College Algebra
Section R.6

I used synthetic division to find the value of a, b, c and d. However, this question is asking for the sum. Take a look at my work to see if there is something missing.

 

[MathLover1]

yes, now find their sum

 

[nycmathguy]

yes, now find their sum

Perfect. I will find the sum when time allows. My weekend is over. Back to work tonight which means sleeping during the day is needed.