Answer:
2
Explanation:
Following the order of operations as set out in PEMDAS
6² - 36 ÷ 3² × 4 - 18 ( no parenthesis so evaluate exponents )
= 36 - 36 ÷ 9 × 4 - 18 ( multiplication/ division, evaluate from left to right )
= 36 - 4 × 4 - 18
= 36 - 16 - 18
= 20 - 18
= 2