Final answer:
To simplify the expression 3[(15–3)2 +4], first simplify the expression inside the parentheses, then square the result, multiply by 3, and finally, add the other term.
Step-by-step explanation:
To simplify the expression 3[(15–3)2 +4], we need to follow the order of operations, which is parentheses, exponents, multiplication, and addition/subtraction (PEMDAS). First, simplify the expression inside the parentheses: (15-3) = 12. Then, square 12 to get 12^2 = 144. Next, multiply 144 by 3 to get 432. Finally, add 432 to 4 to get 436.