Question 142476
If {{{x^2-x+1=0}}} is a factor of {{{ax^3+bx^2+cx+d=0}}} then 
a) {{{d - a = b - 2c}}}
b) {{{a - d = b + 2c}}}
c) {{{a + d = b - 2c}}}

{{{x2-x+1=0}}}………{{{a=0}}},{{{ b=1}}}, {{{c=-1}}}, {{{d=1}}}

Then:

a)	{{{1 - 0= 1 –2(-1)}}}
{{{1=1+2}}}
{{{1=3}}}..........{{{1}}} is not equal to {{{3}}}



b) {{{0 -1 = 1 + 2(-1)}}}
 {{{-1 = 1 –2}}}
{{{-1 =-1}}}……………this is your answer


c) {{{0 + 1= 1 -2(-1)}}}
{{{1=1+2}}}
{{{1=3}}}.............{{{1}}} is not equal to {{{3}}}