Equality holds when...
Source:
January 11, 2009
algebrapolynomialVieta
Problem Statement
If and and are the roots of a_0 \plus{} a_1x \plus{} a_2x^2 \equal{} 0, then the equality a_0 \plus{} a_1x \plus{} a_2x^2 \equal{} a_0\left (1 \minus{} \frac {x}{r} \right ) \left (1 \minus{} \frac {x}{s} \right ) holds:
(C)\ \text{only when }x \equal{} 0
(D)\ \text{only when }x \equal{} r \text{ or }x \equal{} s
(E)\ \text{only when }x \equal{} r \text{ or }x \equal{} s, a_0 \neq 0