SOLUTION: Give that the polynomial function has the given zero, find the other zeros. f(x)= {{{x^3-3x^2-5x+39}}} -3 is a zero.

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Question 240964: Give that the polynomial function has the given zero, find the other zeros.
f(x)= -3 is a zero.

Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!



-3 | 1 -3 -5  39
   |   -3 18 -39
    ------------
     1 -6 13   0

So now you have factored the 
polynomial f(x) this far:



The zeros are found by setting
this equal to 0:



 give the zero -3 which was given.

 will give the other zeros.

But this will not factor so we must use the
quadratic formula:

 

with , , and 
















 

The other zeros are  and 

Edwin

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