The product of uncommon real roots of the two polynomials and is:

MATHEMATICS · Single correct · AoPS · Mathematics · Special Factorizations · Special Factorizations

Problem

The product of uncommon real roots of the two polynomials

p(x) = x^4 + 2x^3 - 8x^2 - 6x + 15

and

q(x) = x^3 + 4x^2 - x - 10

is: (1) (B) 6 (2) (C) 8 (3) (D) 12 (4) (A) 4