MATHEMATICS · Single correct · AoPS · Mathematics · Quadratic Equations - Part 1 · Quadratic Equations - Part 1
Problem
For the quadratic equation ax2+bx+c=0, the sum of the roots is equal to the product of the roots. Which relation among a,b,c must be satisfied?
(a) b−c=0
(b) a+b+c=0
(c) b+c=0
(d) ab+c=0