If a² – ab = 2b², which of the following could be b/a ?
I. 1/2
II. 2
III. -1

(A) I only (B) II only (C) I and II (D) I and III (E) II and III

• Option D.
  The values of a & b that holds good with the above equation is a=2,b=1 & a=-1,b=1
  Accordingly, b/a=2 or -1-->Option D
• 6 years agoHelpfull: Yes(0) No(0)
• a² – ab – 2b² = 0
  => a² – 2ab + ab – 2b² = 0
  => a(a – 2b) + b(a – 2b) = 0
  => (a – 2b)(a + b) = 0
  => b/a = -1 or 1/2
• 5 years agoHelpfull: Yes(0) No(0)