Answer
$52$
Work Step by Step
Solve using PEMDAS (The priority list for solving expressions: Parentheses, exponents, [multiplication, division], [addition, subtraction]. For the operations in the brackets, solve from left to right)
$3^4-[35-(12-6)] = 3^4-[35-6] = 3^4-29 = 81-29 = 52$