Exercise 11 Page 256

According to the order of operations, expressions inside parentheses are evaluated first, followed by exponents, then multiplication and division, and finally addition and subtraction are evaluated last. We can use the acronym PEMDAS to help us remember the correct order!

Let's see the given expression. 6+2^3 *3 -5 We will start by calculating the the cubic power. Let's do it!

Operation	Before Simplification	After Simplification
Calculate power	6+2^3 *3 -5	6+ 8 *3 -5
Multiply	6+ 8 * 3 -5	6+ 24 -5
Add terms	6+ 24 -5	30 -5
Subtract terms	30 - 5	25

The expression is equal to 25.

Alternative Solution

Using a Calculator

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