Question

determine which of the following polynomials has (x+1) x^3+x^2+x+1​

Answer 1

put x= -1 in x^3 + x^2 + x+1 to check whether it is factor

(-1)^3 +(-1)^2 -1+1 = -1+1-1+1 = 0

So x+1) is factor of x^3 + x^2 + x+1