Question 1088858
If x+2 is a factor of x^3 - ax- 6,then find the remainder when 2x^3+ax^2-6x+9 is divided by x+1.
Please help me with this question. 
Thank You.
<pre>{{{f(- 2) = x^3 - ax - 6}}}
Solving this by substituting 0 for f(- 2), and - 2 for x, you will get a = 7.
Since x + 1 is a factor, then a zero is - 1. You now need to use either POLYNOMIAL LONG DIVISION to DIVIDE {{{2x^3 + 7x^2 - 6x + 9}}} by x + 1, or synthetic division to determine the remainder.
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