# What kind of a Triangle is this???

Level pending

Let ABC be a triangle such that $$\angle$$ ACB=$$\pi$$/6 and let a,b,c denote the lengths of the sides opposite to A,B and C respectively. The value of x for which

a=$$x^{2}+x+1$$

b=$$x^{2}-1$$

c=$$2x+1$$

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