Answer:
Let's simplify the expression step by step:
\[ 4^2 - (3.1 + 6.4) + 4.5 \]
1. \(4^2\) is 16.
2. Inside the parentheses, \(3.1 + 6.4\) is 9.5.
3. Subtracting \(9.5\) from \(16\) gives \(6.5\).
4. Adding \(4.5\) to \(6.5\) results in \(11\).
So, \(4^2 - (3.1 + 6.4) + 4.5\) equals \(11\).