Question 899365
How to get all the zeros of this polynomial function 
<pre>
    {{{"f(x)"}}}{{{""=""}}}{{{x^3+2x^2-22x}}}

           {{{x^3+2x^2-22x}}}{{{""=""}}}{{{"0"}}}
           {{{x(x^2+2x-22)}}}{{{""=""}}}{{{"0"}}}

Use the zero-factor property:

     {{{x = 0}}}     {{{x^2+2x-22}}}{{{""=""}}}{{{"0"}}}
                         {{{x = (-b +- sqrt( b^2-4ac ))/(2a) }}}
                         {{{x = (-(2) +- sqrt( (2)^2-4(1)(-22) ))/(2(1)) }}}
                         {{{x = (-2 +- sqrt(4+88))/2 }}}
                         {{{x = (-2 +- sqrt(92))/2 }}}
                         {{{x = (-2 +- sqrt(4*23))/2 }}} 
                         {{{x = (-2 +- 2sqrt(23))/2 }}}
                         {{{x = (2(-1 +- sqrt(23)))/2 }}}
                         {{{x = (cross(2)(-1 +- sqrt(23)))/cross(2) }}}
                         {{{x = -1 +- sqrt(23) }}}

f(x) has three zeros :

{{{matrix(1,5,     0,",",-1 - sqrt(23),",", -1 + sqrt(23) )}}}

Edwin</pre>