If the sides of triangle ABC are $x^{2}+x+1$, 2x+1 and $x^{2}-1$. Then the greatest angle of the triangle is

E

Editor

Sep 18, 2022

If the sides of triangle ABC are $x^{2}+x+1$, 2x+1 and $x^{2}-1$. Then the greatest angle of the triangle is

Difficulty: Easy

A:

130

B:

135

C:

75

D:

120

ID: 63273db9ca83163ac3a1096b