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tmua.me Medium Set D Paper 1 · Q13

Paper 1Geometry

The side lengths of a triangle are xx, x+1x+1 and 2x−12x-1. Its largest angle is 120∘120^\circ.

What is the sum of all possible values of xx?

A76\dfrac76
B16930\dfrac{169}{30}
C356\dfrac{35}{6}
D77
E496\dfrac{49}{6}

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