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Big Ideas Math Algebra 1 A Bridge to Success

BI

Big Ideas Math Algebra 1 A Bridge to Success View details

Maintaining Mathematical Profciency

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Exercise 1 Page 289

Pay close attention to the order of operations.

- 9

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.

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