if a^2+b^2+2b+4a+5=0 then what is the value of a-b /a+b.

• a^2+2.2a+2^2+b^2+2b+1=0
  (a+2)^2+(b+1)^2=0
  It will be satisfied when a=-2 and b=-1.
  so..a-b/a+b=1/3
• 9 years agoHelpfull: Yes(16) No(0)
• a^2+b^2+2b+4a+5=0
  (a^2+4a+4)+(b^2+2b+1)=0
  (a+2)^2+(b+1)^2=0
  so a=-2 and b=-1
  So a-b /a+b=1/3
• 9 years agoHelpfull: Yes(3) No(1)
• speed of ferrari=3 faster than mercedes(35km/h)=105km/h
  dis cover by ferrari=490km/h
  time=dis/speed
  time=490/105=time=4.6
• 9 years agoHelpfull: Yes(2) No(1)
• (a^2+4a+4)+(b^2+2b+1)=0
  (a+2)^2+(b+1)^2=0
  a+2=0 then a=-2
  b+1=0 then b=-1
  So,a-b=-1
  a+b=-3
  Ans: 1/3
• 9 years agoHelpfull: Yes(1) No(1)
• 1/3 is right answer
  
• 9 years agoHelpfull: Yes(1) No(1)