Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
5. Rewriting Equations and Formulas
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Exercise 47 Page 42

Pay close attention to the order of operations.

35

Practice makes perfect

According to the order of operations expressions inside parentheses are evaluated first, while addition and subtraction are evaluated last. 15-5+5^2 For the given expression exponents should be calculated first, followed by subtraction, then finally addition.

Operation Before Simplification After Simplification
Calculate power 15-5+5^2 15-5+ 25
Subtract term 15- 5+25 10+25
Add terms 10+ 25 35

The expression equals 35.

Alternative Solution

Using a Calculator
We can also evaluate this expression using a calculator. To do so, type it as shown below.