This is a substitution problem so let’s try answer choice (1) first
2(6+2)^2 – 4 is way more than 28

Let’s try answer choice (2):
2(2+2)^2 – 4 = 28  YUP 🙂

Since 2 works now we just have to see if -6 works as well:
2(-6+2)^2 – 4 = 28 YUP 🙂

2 more points!!