MathDB

7

Part of 2009 National Olympiad First Round

Problems(1)

uncommon real roots of the two polynomials

Source: 0

4/28/2009
The product of uncommon real roots of the two polynomials x^4 \plus{} 2x^3 \minus{} 8x^2 \minus{} 6x \plus{} 15 and x^3 \plus{} 4x^2 \minus{} x \minus{} 10 is ?
(A)\ \minus{} 4 \qquad(B)\ 4 \qquad(C)\ \minus{} 6 \qquad(D)\ 6 \qquad(E)\ \text{None}
algebrapolynomial