Question 27980
Since you know that the absolute value of k-2 is 4, then you should realize that k-2 can be equal to either 4 or -4.  So, you actually have to solve two problems to get the answer(s).  First, let's solve {{{k-2=4}}}.  Add 2 to both sides to get {{{k=6}}}.  Then, solve {{{k-2=-4}}}.  Add 2 to both sides to get {{{k=-2}}}.