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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

Maintaining Mathematical Proficiency

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Exercise 1 Page 271

Pay close attention to the order of operations.

- 9

Practice makes perfect

According to the order of operations we must remember to evaluate the exponent first, division and multiplication next, and addition and subtraction last. Let's do it for the given expression!

Operation	Before Simplification	After Simplification
Calculate power	12( 14/2)-3^3+15 -9^2	12( 14/2)- 27+15 - 81
Calculate quotient	12 ( 14/2)-27+15-81	12( 7)-27+15-81
Multiply	12 ( 7)-27+15-81	84-27+15-81
Subtract term	84- 27+15-81	57+15-81
Add terms	57+ 15-81	72-81
Subtract term	72- 81	- 9

The expression equals - 9.

Alternative Solution

Using a Calculator

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

Subchapter links

Exercises p.271