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curve 16x 2 +8xy+y 2 -74x-78y+212=0 represents parabola ellipse hyperbola none of these

curve 16x2+8xy+y2-74x-78y+212=0 represents 
  •   parabola
  • ellipse
  • hyperbola
  • none of these
 

Grade:12th pass

5 Answers

Neeraja Outdare
35 Points
6 years ago
parabola!
h=4 a=4 b=1

h^2=ab which implys parabola

study short cut methods on parabola
ng29
1698 Points
6 years ago
yes it is parabola
for parabola  h2=ab  and also  Discriminant must be non zero 
Discriminant= abc+2fgh-af2-bg2-ch2
for given eq-    a=16   b=1   h=4    
approve if useful
ng29
1698 Points
6 years ago
@neeraja
check ur answer again
u had written  a=4 and that is incorrect according to ur values answer is not parabola
Neeraja Outdare
35 Points
6 years ago
sry..thnks fr correcting!
ng29
1698 Points
6 years ago
sure  
my  pleasure

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