Question 1039109
.
<TABLE> 
  <TR>
  <TD> 

{{{graph( 330, 330, -3.5, 3.5, -60.5, 60.5,
          5x^4-26x^3+100x^2+106x-25
)}}}


<B>Figure</B>. Plot y = {{{5x^4-26x^3+100x^2+106x-25}}}

  </TD>
  </TR>
</TABLE>

I will help you in part.


See this plot? It looks like x = -1 is the root of the polynomial.


Check it using your calculator (or Excel in a computer, if you have it).


Then, do you know what to do next?