Answer:
16cm
Step-by-step explanation:
since it is a square, all sides are equal
which means DA = AB
so
2(x-6) = x+2
so
2x-12=x+2
solve for x
x = 14
you can substitute x in either of the equations, to find the length of the side
using x+2
14+2 =16
thus side is 16cm