Answer:x squared = 60
Explanation:
x2-6=54, first you have to cancel out the 6 on the left side by adding 6 to -6 after doing that you are left with
x2-(-6+6)=54
but since you did +6 on the right side you have to do +6 on the left so after that you are left with
x2=54+6
now you just do 54+6=60 so after all of that you get
x2=60
(you can use a calculator to find the square root of 60)