The polynomial equations P1(x) = x3+x2+x+1 and P2(x) = x2−1 have how many factors in common?
1
P1(x) can be factorized as (x+1)(x2+1). So, There are two factors of P1(x)
P2(x) can be factorized as(x+1)(x−1) and hence,there are are two factors of P2(x).
Therefore, there is one factor in common for P1(x) and P2(x).