- #1

utkarshakash

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## Homework Statement

The sides of a triangle are [itex]x^2+3x+3, 2x+3,x^2+2x[/itex]. Prove that the greatest angle of the triangle is 120°.

## Homework Equations

## The Attempt at a Solution

The greatest angle is the one opposite to the greatest side. But how to decide which one is greatest side? Also the sides are variable.