The box is a box and the line is a line, we’re all just lines nothing matters.
The last bc the + and - are different that means it will be subtracted.
The general formula for the distance between two points is

Anyway, if A and B have the same x or y coordinates, this formula can be simplified. For example, in this case the two points have the same x coordinate of -8, so the following part of the formula simplifies:

So, we're left with

but the square root of a square is the absolute value of the object being squared:

which is this case means 
which is the correct length of the side.
Answer:
no solution
Step-by-step explanation:
2+2x=19+2x
2x-2x=19-2
0=17
Aye the Answer is D ~hope that helps :)