Question

If one root of equation x + 3x + 4 = 0 and 2x² + ax + 8 = 0 is common, then value of a is
(A) 3
(B) 6
(C) 4
(D) 2

Answer 1

Answer:

(B) 6

Step-by-step explanation:

⇒ α + β = -b/a

⇒ -3/1 = -a/2

⇒ -a = -6

⇒ a = 6