Answer to math question please? Will award best answer to whomever responds?

Wait, you're missing some important parenthesis!

Is it square root of (2x) + (-12+6) or square root of (2x-12) +6?

I guess it's the latter.

So, move the +6 over on the left:

x-6 = square root of (2x-12)

Square on both sides:

(x-6)^2 = 2x-12

Calculate the left side:

x^2-12x+36 = 2x-12
.
Move the right side over on the left:

x^2-14x+48 = 0

Solve:

x = 7 ± sq.root(49-48)

x= 6 or 8

Voila!

Presentation is unclear.