Question

EXERCISE 2.4
1.
Determine which of the following polynomials has (x + 1) a factor :
(i) x3 + x2+x+1

​

Answer 1

When f(x) is divided by (x+1)
x=-1
Remainder=(-1)3+(-1)2+1
=-1+1+1
=1
Since remainder is not 0 (x+1) is not a factor