Question 674706
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Hi
 p(x)=2x^4-x^3+2x-1    x = -1  and x = 1/2 are roots
Using synthetic division
-1	2	-1	0	2	-1
		-2	3	-3	1
1/2	2	-3	3	-1	0
		1	-1	1	
	2	-2	2	0
results in
   2x^2 - 2x + 2
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}	
{{{x = (2 +- sqrt( 4-16 ))/(4) }}}
{{{x = .5 +- i*sqrt( 3 )/2 }}}
{{{x = .5 +- .8660i }}}