1.

Let ABC be a triangle such that angleACB=pi/6 and let a , b and c denote the lengths of the side opposite to A ,B and C respectively. The value of x for which a=x^(2)+x+1,b=x^(2)-1 and c=2x+1 is

Answer»

`-(2+sqrt3),(2+sqrt3)`
`-(2+sqrt3),(2-sqrt3)`
`-(2+sqrt3),(1+sqrt3)`
`-(2+sqrt3),(1+sqrt3)`

ANSWER :D


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