If (x – p) and (x – q) are the factors of the polynomial P(x) = x2 + ax + b =0, then P(x) can be written as:
(x – p) (x – q)
A polynomial P(x) of any degree can be written as a product of all its factors.
Given that (x- p) and (x – q) are the factors of x2 + ax + b =0
Hence, P(x) = (x – p) (x – q).