If the equations have a common root, then a : b : c is :
3 : 1 : 2
1 : 2 : 3
3 : 2 : 1
1 : 3 : 2
As we have learned
Quadratic Expression Graph when a > 0 & D < 0 -
No Real and Equal root of
&
- wherein
Condition for both roots common -
- wherein
&
are the 2 equations
For
Discriminant = 4-12 = -8 < 0
Both the roots are common as complex roots occur in conjugate
Option 1)
3 : 1 : 2
Option 2)
1 : 2 : 3
Option 3)
3 : 2 : 1
Option 4)
1 : 3 : 2
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