In the quadratic equation x2 - bx + 20 = 0, if the product of two roots is 20, what is the sum of the two roots? Choose the most appropriate option: A) 20 B) 12 C) 16 D) 14 E) 18

Rationale: explanation : the sum of the roots of the quadratic equation ax 2 + ax + c = 0 are ( - b / a ) and the product of the roots are ( c / a ) . thus , in the equation x 2 - ax + 20 = 0 , where a = 1 , b = - a and c = 20 . we get , product of the roots = 20 sum of the roots = - ( - 12 ) / 1 = 12 answer : b
Answer: B