According to the order of operations, expressions inside parentheses are evaluated before powers, while addition and subtraction are evaluated last. For the given expression, this means evaluating the expression inside the parentheses completely before calculating powers and adding the terms.
5^2+(6.7-3.1)
Let's do it!
Operation
Before Simplification
After Simplification
Subtract term
5^2+( 6.7- 3.1)
5^2+ 3.6
Calculate power
5^2+3.6
25+3.6
Add terms
25+ 3.6
28.6
The expression equals 28.6.
Alternative Solution
Using a Calculator
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