30 points
consider the polynomial p(x)=7x3+4x2−112x−64.

part a: what is the complete factorization of p(x)=7x3+4x2−112x−64 over the integers?

part b: what methods are used to factor p(x)=7x3+4x2−112x−64?

select one answer for part a and select all answers that apply for part b.

a: (7x+4)(x2−16)
b: perfect-square trinomial
a: (7x+4)(x−4)(x+4)
b: grouping
b: difference of squares
a: (7x+4)(49x2+28x+16)
a: (7x+4)(x2+56x+16)
b: difference of cubes