Answer:
= 0.2178
Step by step explanation:
To simplify the expression, we need to follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).
The expression can be rewritten as:
(6.6 + 3.2) / [5 × (2 - 5 + 6)²]
= 9.8 / [5 × 3²]
= 9.8 / [5 × 9]
= 9.8 / 45
= 0.2178 (rounded to four decimal places)
Therefore, the simplified value of the expression is 0.2178.