Answer:
Answer: 18
Step-by-step explanation:
Follow the rule of BIDMAS -
(7 - 4)² = 3² = 9
9 x 2 = 18
(a-b)^2 * 2 = (7-4)^2 * 2 = 3^2 *2 = 9 * 2 =
18
(based of 'order of operation', look at diagram for help)
Hope that helps!
