to solve this, remember the acronym PEMDAS
parenthesis, exponents, multiplication, division, addition, subtraction
start by doing (6-3), which is 3
now the equation is 3^2+12 / 3 x 8
then do 3^2, which is 9
9+12 / 3 x 8
now do 3 x 8, which is 24
9+12 / 24
divide 12 and 24, which is one half
9 + 1/2
add this to get 9.5
hope this helped!!