Pearson Algebra 1 Common Core, 2011
PA
Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
Continue to next subchapter

Exercise 24 Page 69

Pay close attention to the order of operations.

100

Practice makes perfect

According to the order of operations, expressions inside parentheses are evaluated first. For the given expression, this means evaluating the expression 2^4-6 completely before calculating the exponent. (2^4-6)^2Notice also that even within this parenthetical expression, we must obey the order of operations. 2^4-6 For this, we must remember to evaluate the exponent first, then find the difference between the terms.

Operation Before Simplification After Simplification
Calculate power (2^4-6)^2 ( 16-6)^2
Subtract term ( 16- 6)^2 ( 10)^2
Calculate power (10)^2 100

The expression equals 100.

Alternative Solution

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