Answer:
Step 3 is wrong and the answer should be 576
Step-by-step explanation:
Step 1 and step 2 are correct
Step 2: 4 × 12^2
You don't multiply 12 by 4, you first complete the exponent since, in PEMDAS, Exponent is before Multiplying.
Step 3 should be: 4 × (12×12)
= 4 × 144
= 576
