Question

Check whether the following polynomial have (x + 1) as factor.
x3 +x2 + x + 1

Answer 1

Here, p (x)= x3+x2+x+1

With factor method,
X+1=0
X= -1
By the reminder theorem p (x) = -1
P (-1)= (-1)3 +(-1)2 +(-1) +1
= -3-2-1+1
= -5
Ans no,its not a factor