Question

Which of the following equations has the sum of its roots as 2? (A) 5x2 –25x – 3 = 0 (B) x2 – 2x – 5 = 0 (C) 2x2 – 2x + 1 = 0 (D) 3x2 – 2x + 7 = 0​

Answer 1

Answer:

(B) x²-2x-5 is the correct answer

Explanation:

sum of roots=-b/a

here in b option

-b/a => -(-2/1) which is 2

a=1 ,b=-2,c=-5 in this equation