Answer:
21
Step-by-step explanation:
21
The congruent side is going to be 9
16 bc all sides of a square are congruent and area = LxW so 4x4=16
Only problem is with the simplifying.
We all know that 5/5 = 1, it is natural to assume (x+a)/(x+a) is also 1, but in some cases where x+a=0, it is undefined. In this equation, where they simplify (x-2) and (x-6), you must say that x is not 2 nor 6 or, you just delete 0/0 which is undefined.
Therefore the only solution would be x=-1
