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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

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Exercise 8 Page 415

Pay close attention to the order of operations.

0.75

Practice makes perfect

According to the order of operations, expressions inside parentheses are evaluated first, while addition and subtraction are evaluated last.

3-(1.5)^2 For this, we must remember to evaluate the exponent first, and the subtraction next.

Operation	Before Simplification	After Simplification
Calculate power	3-(1.5)^2	3- 2.25
Subtract term	3- 2.25	0.75

The expression equals 0.75.

Alternative Solution

Using a Calculator

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