Question 287848
one factor of {{{x^3 + 2x^3 - 11x - 12}}} is {{{x + 4}}}.
Find the remaining factors.
<pre><font size = 4 color = "indigo"><b>

Since x + 4 is a factor, then x = -4 is a zero.  Use synthetic
division with -4

 -4 |  1  2 -11 -12
    |<u>    -4   8  12</u>
       1 -2  -3   0

So we have factored the polynomial as

{{{(x+4)(x^2-2x-3)}}}

Now we factor the trinomial:


{{{(x+4)(x-3)(x+1)}}}  

Edwin</pre>