The polynomial p(x)=x³−7x−6 has a known factor of (x−1). Rewrite p(x) as a product of linear factors.
a. (x−1)(x+2)(x+3)
b. (x+1)(x−2)(x−3)
c. (x+1)(x−2)(x+3)
d. (x−1)(x−2)(x−3)