Help with this problem.Anyone please help!?

Question

im currently stuck on one problem on my homework.

1/6(6+18)-2 to the second power

I really need help and an awnser.thank you!

Answer 1

The whole thing is to be squared?

before you do that, simplify it

1/6(6+18)-2

1/6(24)-2

4-2

2

now square it

4

.