The answer to (8-5)(5-3)² should be 12.
First, subtract 8-5 which gets 3. Your problem should look like 3(5-3)²
Second, subtract 5-3 which gets 2. Your problem should look like 3x2²
Third, simplify 2² to get 4. Your problem should look like 3x4
Fourth, just multiply. 3 x 4 is 12 which is your answer.