Question 180325
3x3+6x2-15x-30
:
{{{3(x^3+2x^2-5x-10)}}}
:
we know that possible roots are plus and minus 1,2,5,and 10
:
I found +2 is a root
:
<img src="http://i11.photobucket.com/albums/a176/jabberstox/soldiers%20of%20fortune/MSP-3.gif">
:
so we have{{{3(x+2)(x^2-5)}}}
:
{{{3(x+2)(x+sqrt(5))(x-sqrt(5))}}}
:
roots:{{{sytem(-2,sqrt(5),-sqrt(5))}}}