Move the 14 over and get
5x = 2
divide by 5
x = 2/5
Rational. There’s nothing further that you can do with this problem
For this case we have the following expression:

We take common factor
, for this we must take into account that:

So, factoring the expression we have:

ANswer:
The factored expression is:

Hello.
JK (or any other combination of letters) doesn't stand for anything in geometry. The purpose of these letters is to reference certain angles and sides of a figure without having to describe the angles/sides in relation to other angles/sides to know exactly which angle or side is being referenced.
Hope this helps!