(x-4)2=12 First, you want to divide both sides by 2 to eliminate the 2 outside of the parenthesis. That leaves you with: (x-4)=6 Then add four to both sides to eliminate the four inside the parenthesis: x=10
To check work, substitute ten in for x in the original equation: (10-4)2=12 (6)2=12 12=12, so this is correct :)
