Answer:
x=5.5 i think
Step-by-step explanation:
Answer:
Since angle G is the largest angle, the opposite side, JH, is the longest. The order of the side lengths from longest to shortest is JH, HG, GJ
we know that
the equation

describe a vertical parabola with vertex at point 
if
-------> the parabola open Up and the vertex is a minimum
if
-------> the parabola open Down and the vertex is a maximum
in this problem we have
---> because is positive (given problem)
so
The vertex is a minimum
therefore
<u>the answer is the option C</u>
Up
Let

be the length of the square, then the area is

. Hence, the side is the positive root of the area, which is