Factor polynomial completely where the leading coefficient is more than 1

P(×)=6׳+4ײ-14×+4

Factor the following polynomial completely

P(×)=×⁴-2׳-3ײ+8×-4

Determine if the given binomial×-c is a factor of the given polynomial p(×)

p(×)=׳-4ײ-2×+5;×-1